[build] Regenerate .csproj files

Note: DISABLE_CAS_USE was removed in ed989a8e9e5c170b6d19edc60bb80e8a4e6d5cc0

276 files changed, 1768 insertions, 664 deletions

diff --git a/mcs/class/Accessibility/Accessibility-net_4_x.csproj b/mcs/class/Accessibility/Accessibility-net_4_x.csproj
index 50cdfcf6868..845a5848fef 100644
--- a/mcs/class/Accessibility/Accessibility-net_4_x.csproj
+++ b/mcs/class/Accessibility/Accessibility-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Commons.Xml.Relaxng/Commons.Xml.Relaxng-net_4_x.csproj b/mcs/class/Commons.Xml.Relaxng/Commons.Xml.Relaxng-net_4_x.csproj
index 2539a5b4b18..08e26fc92cb 100644
--- a/mcs/class/Commons.Xml.Relaxng/Commons.Xml.Relaxng-net_4_x.csproj
+++ b/mcs/class/Commons.Xml.Relaxng/Commons.Xml.Relaxng-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Cscompmgd/Cscompmgd-net_4_x.csproj b/mcs/class/Cscompmgd/Cscompmgd-net_4_x.csproj
index 2c40504aa63..93838aac814 100644
--- a/mcs/class/Cscompmgd/Cscompmgd-net_4_x.csproj
+++ b/mcs/class/Cscompmgd/Cscompmgd-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/CustomMarshalers/CustomMarshalers-net_4_x.csproj b/mcs/class/CustomMarshalers/CustomMarshalers-net_4_x.csproj
index bf2bc3fb533..04b96a98159 100644
--- a/mcs/class/CustomMarshalers/CustomMarshalers-net_4_x.csproj
+++ b/mcs/class/CustomMarshalers/CustomMarshalers-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/Microsoft.Win32.Primitives/Facades_Microsoft.Win32.Primitives-net_4_x.csproj b/mcs/class/Facades/Microsoft.Win32.Primitives/Facades_Microsoft.Win32.Primitives-net_4_x.csproj
index ef4329f1ed1..fe2088a1e88 100644
--- a/mcs/class/Facades/Microsoft.Win32.Primitives/Facades_Microsoft.Win32.Primitives-net_4_x.csproj
+++ b/mcs/class/Facades/Microsoft.Win32.Primitives/Facades_Microsoft.Win32.Primitives-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/Microsoft.Win32.Registry.AccessControl/Facades_Microsoft.Win32.Registry.AccessControl-net_4_x.csproj b/mcs/class/Facades/Microsoft.Win32.Registry.AccessControl/Facades_Microsoft.Win32.Registry.AccessControl-net_4_x.csproj
index 1bca67282f6..2a7617ed842 100644
--- a/mcs/class/Facades/Microsoft.Win32.Registry.AccessControl/Facades_Microsoft.Win32.Registry.AccessControl-net_4_x.csproj
+++ b/mcs/class/Facades/Microsoft.Win32.Registry.AccessControl/Facades_Microsoft.Win32.Registry.AccessControl-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -54,7 +54,9 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\..\build\common\MonoTODOAttribute.cs" />

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="RegistryAclExtensions.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/Microsoft.Win32.Registry/Facades_Microsoft.Win32.Registry-net_4_x.csproj b/mcs/class/Facades/Microsoft.Win32.Registry/Facades_Microsoft.Win32.Registry-net_4_x.csproj
index 5189fe3c1ad..71432f25858 100644
--- a/mcs/class/Facades/Microsoft.Win32.Registry/Facades_Microsoft.Win32.Registry-net_4_x.csproj
+++ b/mcs/class/Facades/Microsoft.Win32.Registry/Facades_Microsoft.Win32.Registry-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.AppContext/Facades_System.AppContext-net_4_x.csproj b/mcs/class/Facades/System.AppContext/Facades_System.AppContext-net_4_x.csproj
index 3980a552ddc..1ec1696d4f3 100644
--- a/mcs/class/Facades/System.AppContext/Facades_System.AppContext-net_4_x.csproj
+++ b/mcs/class/Facades/System.AppContext/Facades_System.AppContext-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Collections.Concurrent/Facades_System.Collections.Concurrent-net_4_x.csproj b/mcs/class/Facades/System.Collections.Concurrent/Facades_System.Collections.Concurrent-net_4_x.csproj
index eee52ccc352..79c3744a85e 100644
--- a/mcs/class/Facades/System.Collections.Concurrent/Facades_System.Collections.Concurrent-net_4_x.csproj
+++ b/mcs/class/Facades/System.Collections.Concurrent/Facades_System.Collections.Concurrent-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Collections.NonGeneric/Facades_System.Collections.NonGeneric-net_4_x.csproj b/mcs/class/Facades/System.Collections.NonGeneric/Facades_System.Collections.NonGeneric-net_4_x.csproj
index a7e0139702f..df03b0e481e 100644
--- a/mcs/class/Facades/System.Collections.NonGeneric/Facades_System.Collections.NonGeneric-net_4_x.csproj
+++ b/mcs/class/Facades/System.Collections.NonGeneric/Facades_System.Collections.NonGeneric-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Collections.Specialized/Facades_System.Collections.Specialized-net_4_x.csproj b/mcs/class/Facades/System.Collections.Specialized/Facades_System.Collections.Specialized-net_4_x.csproj
index 44e2fc91c58..a3c00e1a979 100644
--- a/mcs/class/Facades/System.Collections.Specialized/Facades_System.Collections.Specialized-net_4_x.csproj
+++ b/mcs/class/Facades/System.Collections.Specialized/Facades_System.Collections.Specialized-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Collections/Facades_System.Collections-net_4_x.csproj b/mcs/class/Facades/System.Collections/Facades_System.Collections-net_4_x.csproj
index c3eb239218a..6a1cc99f6a4 100644
--- a/mcs/class/Facades/System.Collections/Facades_System.Collections-net_4_x.csproj
+++ b/mcs/class/Facades/System.Collections/Facades_System.Collections-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ComponentModel.Annotations/Facades_System.ComponentModel.Annotations-net_4_x.csproj b/mcs/class/Facades/System.ComponentModel.Annotations/Facades_System.ComponentModel.Annotations-net_4_x.csproj
index a0d3c1b52b0..966515166d4 100644
--- a/mcs/class/Facades/System.ComponentModel.Annotations/Facades_System.ComponentModel.Annotations-net_4_x.csproj
+++ b/mcs/class/Facades/System.ComponentModel.Annotations/Facades_System.ComponentModel.Annotations-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ComponentModel.EventBasedAsync/Facades_System.ComponentModel.EventBasedAsync-net_4_x.csproj b/mcs/class/Facades/System.ComponentModel.EventBasedAsync/Facades_System.ComponentModel.EventBasedAsync-net_4_x.csproj
index cbeca4b5886..98e71d7655f 100644
--- a/mcs/class/Facades/System.ComponentModel.EventBasedAsync/Facades_System.ComponentModel.EventBasedAsync-net_4_x.csproj
+++ b/mcs/class/Facades/System.ComponentModel.EventBasedAsync/Facades_System.ComponentModel.EventBasedAsync-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ComponentModel.Primitives/Facades_System.ComponentModel.Primitives-net_4_x.csproj b/mcs/class/Facades/System.ComponentModel.Primitives/Facades_System.ComponentModel.Primitives-net_4_x.csproj
index 65e0f7e3271..dd46e98eea7 100644
--- a/mcs/class/Facades/System.ComponentModel.Primitives/Facades_System.ComponentModel.Primitives-net_4_x.csproj
+++ b/mcs/class/Facades/System.ComponentModel.Primitives/Facades_System.ComponentModel.Primitives-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ComponentModel.TypeConverter/Facades_System.ComponentModel.TypeConverter-net_4_x.csproj b/mcs/class/Facades/System.ComponentModel.TypeConverter/Facades_System.ComponentModel.TypeConverter-net_4_x.csproj
index aea55676326..0588ebb780e 100644
--- a/mcs/class/Facades/System.ComponentModel.TypeConverter/Facades_System.ComponentModel.TypeConverter-net_4_x.csproj
+++ b/mcs/class/Facades/System.ComponentModel.TypeConverter/Facades_System.ComponentModel.TypeConverter-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ComponentModel/Facades_System.ComponentModel-net_4_x.csproj b/mcs/class/Facades/System.ComponentModel/Facades_System.ComponentModel-net_4_x.csproj
index a1a92d79df8..07dd4fb1269 100644
--- a/mcs/class/Facades/System.ComponentModel/Facades_System.ComponentModel-net_4_x.csproj
+++ b/mcs/class/Facades/System.ComponentModel/Facades_System.ComponentModel-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Console/Facades_System.Console-net_4_x.csproj b/mcs/class/Facades/System.Console/Facades_System.Console-net_4_x.csproj
index c42832bf3a4..b06202172a2 100644
--- a/mcs/class/Facades/System.Console/Facades_System.Console-net_4_x.csproj
+++ b/mcs/class/Facades/System.Console/Facades_System.Console-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Data.Common/Facades_System.Data.Common-net_4_x.csproj b/mcs/class/Facades/System.Data.Common/Facades_System.Data.Common-net_4_x.csproj
index 493303cc15e..69def9bbbe2 100644
--- a/mcs/class/Facades/System.Data.Common/Facades_System.Data.Common-net_4_x.csproj
+++ b/mcs/class/Facades/System.Data.Common/Facades_System.Data.Common-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,9 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="DbColumn.cs" />

+    <Compile Include="DbDataReaderExtensions.Facade.cs" />

+    <Compile Include="IDbColumnSchemaGenerator.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

@@ -90,6 +93,10 @@
       <Project>{EC439BB8-FFED-4A32-A05D-2FA3A70CAD64}</Project>

       <Name>System.Data-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../../System.XML/System.Xml-net_4_x.csproj">

+      <Project>{87FD2F0F-5222-4AE6-BD63-2D4975E11E5B}</Project>

+      <Name>System.Xml-net_4_x</Name>

+    </ProjectReference>

   </ItemGroup>

   <ItemGroup>

     <Folder Include="Properties\" />

diff --git a/mcs/class/Facades/System.Data.SqlClient/Facades_System.Data.SqlClient-net_4_x.csproj b/mcs/class/Facades/System.Data.SqlClient/Facades_System.Data.SqlClient-net_4_x.csproj
index 3427bb006e9..edc7b8fe699 100644
--- a/mcs/class/Facades/System.Data.SqlClient/Facades_System.Data.SqlClient-net_4_x.csproj
+++ b/mcs/class/Facades/System.Data.SqlClient/Facades_System.Data.SqlClient-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.Contracts/Facades_System.Diagnostics.Contracts-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.Contracts/Facades_System.Diagnostics.Contracts-net_4_x.csproj
index 72f03e89c83..8e4f486a2c4 100644
--- a/mcs/class/Facades/System.Diagnostics.Contracts/Facades_System.Diagnostics.Contracts-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.Contracts/Facades_System.Diagnostics.Contracts-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.Debug/Facades_System.Diagnostics.Debug-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.Debug/Facades_System.Diagnostics.Debug-net_4_x.csproj
index 5de4c3cd3b7..895379b7f20 100644
--- a/mcs/class/Facades/System.Diagnostics.Debug/Facades_System.Diagnostics.Debug-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.Debug/Facades_System.Diagnostics.Debug-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.FileVersionInfo/Facades_System.Diagnostics.FileVersionInfo-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.FileVersionInfo/Facades_System.Diagnostics.FileVersionInfo-net_4_x.csproj
index e8db26624c3..2e69a33fb69 100644
--- a/mcs/class/Facades/System.Diagnostics.FileVersionInfo/Facades_System.Diagnostics.FileVersionInfo-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.FileVersionInfo/Facades_System.Diagnostics.FileVersionInfo-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.Process/Facades_System.Diagnostics.Process-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.Process/Facades_System.Diagnostics.Process-net_4_x.csproj
index 210e44530fa..8dd7a8481b8 100644
--- a/mcs/class/Facades/System.Diagnostics.Process/Facades_System.Diagnostics.Process-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.Process/Facades_System.Diagnostics.Process-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.StackTrace/Facades_System.Diagnostics.StackTrace-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.StackTrace/Facades_System.Diagnostics.StackTrace-net_4_x.csproj
index 9d1c6f14752..db4db23b4df 100644
--- a/mcs/class/Facades/System.Diagnostics.StackTrace/Facades_System.Diagnostics.StackTrace-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.StackTrace/Facades_System.Diagnostics.StackTrace-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -54,7 +54,9 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\..\build\common\MonoTODOAttribute.cs" />

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="StackFrameExtensions.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Diagnostics.TextWriterTraceListener/Facades_System.Diagnostics.TextWriterTraceListener-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.TextWriterTraceListener/Facades_System.Diagnostics.TextWriterTraceListener-net_4_x.csproj
index fb2f1485d87..b09e80bd573 100644
--- a/mcs/class/Facades/System.Diagnostics.TextWriterTraceListener/Facades_System.Diagnostics.TextWriterTraceListener-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.TextWriterTraceListener/Facades_System.Diagnostics.TextWriterTraceListener-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.Tools/Facades_System.Diagnostics.Tools-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.Tools/Facades_System.Diagnostics.Tools-net_4_x.csproj
index 5d1e6d7135d..d72e1ade937 100644
--- a/mcs/class/Facades/System.Diagnostics.Tools/Facades_System.Diagnostics.Tools-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.Tools/Facades_System.Diagnostics.Tools-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.TraceEvent/Facades_System.Diagnostics.TraceEvent-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.TraceEvent/Facades_System.Diagnostics.TraceEvent-net_4_x.csproj
index f31a1fc6a55..04b6b9adcfd 100644
--- a/mcs/class/Facades/System.Diagnostics.TraceEvent/Facades_System.Diagnostics.TraceEvent-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.TraceEvent/Facades_System.Diagnostics.TraceEvent-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.TraceSource/Facades_System.Diagnostics.TraceSource-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.TraceSource/Facades_System.Diagnostics.TraceSource-net_4_x.csproj
index 7003052edfd..4ae49afc0e9 100644
--- a/mcs/class/Facades/System.Diagnostics.TraceSource/Facades_System.Diagnostics.TraceSource-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.TraceSource/Facades_System.Diagnostics.TraceSource-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Diagnostics.Tracing/Facades_System.Diagnostics.Tracing-net_4_x.csproj b/mcs/class/Facades/System.Diagnostics.Tracing/Facades_System.Diagnostics.Tracing-net_4_x.csproj
index 73d08a19bd1..e743ee19c29 100644
--- a/mcs/class/Facades/System.Diagnostics.Tracing/Facades_System.Diagnostics.Tracing-net_4_x.csproj
+++ b/mcs/class/Facades/System.Diagnostics.Tracing/Facades_System.Diagnostics.Tracing-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,7 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="EventCounter.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Drawing.Primitives/Facades_System.Drawing.Primitives-net_4_x.csproj b/mcs/class/Facades/System.Drawing.Primitives/Facades_System.Drawing.Primitives-net_4_x.csproj
new file mode 100644
index 00000000000..26a60548ddd
--- /dev/null
+++ b/mcs/class/Facades/System.Drawing.Primitives/Facades_System.Drawing.Primitives-net_4_x.csproj
@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <PropertyGroup>

+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

+    <ProductVersion>9.0.30729</ProductVersion>

+    <SchemaVersion>2.0</SchemaVersion>

+    <ProjectGuid>{1AFDB281-5FB8-48A9-8694-7F515D835862}</ProjectGuid>

+    <OutputType>Library</OutputType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <OutputPath>./../../../class/lib/net_4_x/Facades</OutputPath>

+    <IntermediateOutputPath>obj-Facades</IntermediateOutputPath>

+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

+    <NoStdLib>True</NoStdLib>

+    

+    <NoConfig>True</NoConfig>

+    

+    <AppDesignerFolder>Properties</AppDesignerFolder>

+    <RootNamespace>

+    </RootNamespace>

+    <AssemblyName>System.Drawing.Primitives</AssemblyName>

+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>

+    <FileAlignment>512</FileAlignment>

+  </PropertyGroup>

+    <PropertyGroup>

+    <SignAssembly>true</SignAssembly>

+    <DelaySign>true</DelaySign>

+  </PropertyGroup>

+  <PropertyGroup>

+    <AssemblyOriginatorKeyFile>../../msfinal.pub</AssemblyOriginatorKeyFile>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

+    <DebugSymbols>true</DebugSymbols>

+    <DebugType>full</DebugType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <Optimize>false</Optimize>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

+    <DebugType>pdbonly</DebugType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <Optimize>true</Optimize>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <!-- Set AddAdditionalExplicitAssemblyReferences to false, otherwise if targetting .NET4.0, 

+  Microsoft.NETFramework.props will force a dependency on the assembly System.Core. This

+  is a problem to compile the Mono mscorlib.dll -->

+  <PropertyGroup>

+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>

+  </PropertyGroup>

+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

+  <ItemGroup>

+    <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

+       Other similar extension points exist, see Microsoft.Common.targets.

+  <Target Name="BeforeBuild">

+  </Target>

+  <Target Name="AfterBuild">

+  </Target>

+  -->

+  <PropertyGroup>

+    <PreBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PreBuildEvent>

+    <PreBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PreBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PostBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PostBuildEvent>

+  </PropertyGroup>

+  <ItemGroup>

+    <ProjectReference Include="../../corlib/corlib-net_4_x.csproj">

+      <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

+      <Name>corlib-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../../System/System-net_4_x.csproj">

+      <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

+      <Name>System-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../../System.Drawing/System.Drawing-net_4_x.csproj">

+      <Project>{584A5E46-2958-4CB2-8DF9-188B420D0BB0}</Project>

+      <Name>System.Drawing-net_4_x</Name>

+    </ProjectReference>

+  </ItemGroup>

+  <ItemGroup>

+    <Folder Include="Properties\" />

+  </ItemGroup>

+</Project>

+
diff --git a/mcs/class/Facades/System.Dynamic.Runtime/Facades_System.Dynamic.Runtime-net_4_x.csproj b/mcs/class/Facades/System.Dynamic.Runtime/Facades_System.Dynamic.Runtime-net_4_x.csproj
index 076b4d9bfa0..1d5958c3158 100644
--- a/mcs/class/Facades/System.Dynamic.Runtime/Facades_System.Dynamic.Runtime-net_4_x.csproj
+++ b/mcs/class/Facades/System.Dynamic.Runtime/Facades_System.Dynamic.Runtime-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Globalization.Calendars/Facades_System.Globalization.Calendars-net_4_x.csproj b/mcs/class/Facades/System.Globalization.Calendars/Facades_System.Globalization.Calendars-net_4_x.csproj
index d0aa63ef3cf..b747686d4c5 100644
--- a/mcs/class/Facades/System.Globalization.Calendars/Facades_System.Globalization.Calendars-net_4_x.csproj
+++ b/mcs/class/Facades/System.Globalization.Calendars/Facades_System.Globalization.Calendars-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Globalization.Extensions/Facades_System.Globalization.Extensions-net_4_x.csproj b/mcs/class/Facades/System.Globalization.Extensions/Facades_System.Globalization.Extensions-net_4_x.csproj
index 66212877264..6a3f8bfd5ee 100644
--- a/mcs/class/Facades/System.Globalization.Extensions/Facades_System.Globalization.Extensions-net_4_x.csproj
+++ b/mcs/class/Facades/System.Globalization.Extensions/Facades_System.Globalization.Extensions-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -54,7 +54,11 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\..\build\common\MonoTODOAttribute.cs" />

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="GlobalizationExtensions.cs" />

+    <Compile Include="SR.cs" />

+    <Compile Include="StringNormalizationExtensions.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Globalization/Facades_System.Globalization-net_4_x.csproj b/mcs/class/Facades/System.Globalization/Facades_System.Globalization-net_4_x.csproj
index d3117287fbc..a6a4f30af61 100644
--- a/mcs/class/Facades/System.Globalization/Facades_System.Globalization-net_4_x.csproj
+++ b/mcs/class/Facades/System.Globalization/Facades_System.Globalization-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.Compression.ZipFile/Facades_System.IO.Compression.ZipFile-net_4_x.csproj b/mcs/class/Facades/System.IO.Compression.ZipFile/Facades_System.IO.Compression.ZipFile-net_4_x.csproj
index 4423a9dc9a4..c08cf3fd3be 100644
--- a/mcs/class/Facades/System.IO.Compression.ZipFile/Facades_System.IO.Compression.ZipFile-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.Compression.ZipFile/Facades_System.IO.Compression.ZipFile-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.FileSystem.AccessControl/Facades_System.IO.FileSystem.AccessControl-net_4_x.csproj b/mcs/class/Facades/System.IO.FileSystem.AccessControl/Facades_System.IO.FileSystem.AccessControl-net_4_x.csproj
index 0f9d44c9cd4..dccdebd9f84 100644
--- a/mcs/class/Facades/System.IO.FileSystem.AccessControl/Facades_System.IO.FileSystem.AccessControl-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.FileSystem.AccessControl/Facades_System.IO.FileSystem.AccessControl-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -54,7 +54,9 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\..\build\common\MonoTODOAttribute.cs" />

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="FileSystemAclExtensions.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.IO.FileSystem.DriveInfo/Facades_System.IO.FileSystem.DriveInfo-net_4_x.csproj b/mcs/class/Facades/System.IO.FileSystem.DriveInfo/Facades_System.IO.FileSystem.DriveInfo-net_4_x.csproj
index 5edbbbb8034..a8b7b70e84d 100644
--- a/mcs/class/Facades/System.IO.FileSystem.DriveInfo/Facades_System.IO.FileSystem.DriveInfo-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.FileSystem.DriveInfo/Facades_System.IO.FileSystem.DriveInfo-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.FileSystem.Primitives/Facades_System.IO.FileSystem.Primitives-net_4_x.csproj b/mcs/class/Facades/System.IO.FileSystem.Primitives/Facades_System.IO.FileSystem.Primitives-net_4_x.csproj
index 98c67e82710..9f3bcaf5af9 100644
--- a/mcs/class/Facades/System.IO.FileSystem.Primitives/Facades_System.IO.FileSystem.Primitives-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.FileSystem.Primitives/Facades_System.IO.FileSystem.Primitives-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.FileSystem.Watcher/Facades_System.IO.FileSystem.Watcher-net_4_x.csproj b/mcs/class/Facades/System.IO.FileSystem.Watcher/Facades_System.IO.FileSystem.Watcher-net_4_x.csproj
index 75fe3913f4e..e209498693b 100644
--- a/mcs/class/Facades/System.IO.FileSystem.Watcher/Facades_System.IO.FileSystem.Watcher-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.FileSystem.Watcher/Facades_System.IO.FileSystem.Watcher-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.FileSystem/Facades_System.IO.FileSystem-net_4_x.csproj b/mcs/class/Facades/System.IO.FileSystem/Facades_System.IO.FileSystem-net_4_x.csproj
index 34784bd92b7..08ccb1f95a0 100644
--- a/mcs/class/Facades/System.IO.FileSystem/Facades_System.IO.FileSystem-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.FileSystem/Facades_System.IO.FileSystem-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.IsolatedStorage/Facades_System.IO.IsolatedStorage-net_4_x.csproj b/mcs/class/Facades/System.IO.IsolatedStorage/Facades_System.IO.IsolatedStorage-net_4_x.csproj
index 866e14f1a16..85faf1692ae 100644
--- a/mcs/class/Facades/System.IO.IsolatedStorage/Facades_System.IO.IsolatedStorage-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.IsolatedStorage/Facades_System.IO.IsolatedStorage-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.MemoryMappedFiles/Facades_System.IO.MemoryMappedFiles-net_4_x.csproj b/mcs/class/Facades/System.IO.MemoryMappedFiles/Facades_System.IO.MemoryMappedFiles-net_4_x.csproj
index 3e44aef4606..24ac01a7e84 100644
--- a/mcs/class/Facades/System.IO.MemoryMappedFiles/Facades_System.IO.MemoryMappedFiles-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.MemoryMappedFiles/Facades_System.IO.MemoryMappedFiles-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.Pipes/Facades_System.IO.Pipes-net_4_x.csproj b/mcs/class/Facades/System.IO.Pipes/Facades_System.IO.Pipes-net_4_x.csproj
index 71c4350a6e7..32645894fbb 100644
--- a/mcs/class/Facades/System.IO.Pipes/Facades_System.IO.Pipes-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.Pipes/Facades_System.IO.Pipes-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO.UnmanagedMemoryStream/Facades_System.IO.UnmanagedMemoryStream-net_4_x.csproj b/mcs/class/Facades/System.IO.UnmanagedMemoryStream/Facades_System.IO.UnmanagedMemoryStream-net_4_x.csproj
index c65751b5388..1b3f735a43d 100644
--- a/mcs/class/Facades/System.IO.UnmanagedMemoryStream/Facades_System.IO.UnmanagedMemoryStream-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO.UnmanagedMemoryStream/Facades_System.IO.UnmanagedMemoryStream-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.IO/Facades_System.IO-net_4_x.csproj b/mcs/class/Facades/System.IO/Facades_System.IO-net_4_x.csproj
index da00e74eff7..7bc83b07202 100644
--- a/mcs/class/Facades/System.IO/Facades_System.IO-net_4_x.csproj
+++ b/mcs/class/Facades/System.IO/Facades_System.IO-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Linq.Expressions/Facades_System.Linq.Expressions-net_4_x.csproj b/mcs/class/Facades/System.Linq.Expressions/Facades_System.Linq.Expressions-net_4_x.csproj
index e7c6951666b..5d4da853465 100644
--- a/mcs/class/Facades/System.Linq.Expressions/Facades_System.Linq.Expressions-net_4_x.csproj
+++ b/mcs/class/Facades/System.Linq.Expressions/Facades_System.Linq.Expressions-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Linq.Parallel/Facades_System.Linq.Parallel-net_4_x.csproj b/mcs/class/Facades/System.Linq.Parallel/Facades_System.Linq.Parallel-net_4_x.csproj
index de83417856b..c18a05cba15 100644
--- a/mcs/class/Facades/System.Linq.Parallel/Facades_System.Linq.Parallel-net_4_x.csproj
+++ b/mcs/class/Facades/System.Linq.Parallel/Facades_System.Linq.Parallel-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Linq.Queryable/Facades_System.Linq.Queryable-net_4_x.csproj b/mcs/class/Facades/System.Linq.Queryable/Facades_System.Linq.Queryable-net_4_x.csproj
index 3aa8b75ec1f..613b555874f 100644
--- a/mcs/class/Facades/System.Linq.Queryable/Facades_System.Linq.Queryable-net_4_x.csproj
+++ b/mcs/class/Facades/System.Linq.Queryable/Facades_System.Linq.Queryable-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Linq/Facades_System.Linq-net_4_x.csproj b/mcs/class/Facades/System.Linq/Facades_System.Linq-net_4_x.csproj
index 9c29c3428fd..6c0aebd9f2b 100644
--- a/mcs/class/Facades/System.Linq/Facades_System.Linq-net_4_x.csproj
+++ b/mcs/class/Facades/System.Linq/Facades_System.Linq-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.AuthenticationManager/Facades_System.Net.AuthenticationManager-net_4_x.csproj b/mcs/class/Facades/System.Net.AuthenticationManager/Facades_System.Net.AuthenticationManager-net_4_x.csproj
index b14fcb89dc5..f9fa183e77c 100644
--- a/mcs/class/Facades/System.Net.AuthenticationManager/Facades_System.Net.AuthenticationManager-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.AuthenticationManager/Facades_System.Net.AuthenticationManager-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.Cache/Facades_System.Net.Cache-net_4_x.csproj b/mcs/class/Facades/System.Net.Cache/Facades_System.Net.Cache-net_4_x.csproj
index 5ff7c8612a0..e677311dafb 100644
--- a/mcs/class/Facades/System.Net.Cache/Facades_System.Net.Cache-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.Cache/Facades_System.Net.Cache-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.HttpListener/Facades_System.Net.HttpListener-net_4_x.csproj b/mcs/class/Facades/System.Net.HttpListener/Facades_System.Net.HttpListener-net_4_x.csproj
index 9c59776987c..d6d99f4238d 100644
--- a/mcs/class/Facades/System.Net.HttpListener/Facades_System.Net.HttpListener-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.HttpListener/Facades_System.Net.HttpListener-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.Mail/Facades_System.Net.Mail-net_4_x.csproj b/mcs/class/Facades/System.Net.Mail/Facades_System.Net.Mail-net_4_x.csproj
index f38a0d52aa5..ba50678a084 100644
--- a/mcs/class/Facades/System.Net.Mail/Facades_System.Net.Mail-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.Mail/Facades_System.Net.Mail-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.NameResolution/Facades_System.Net.NameResolution-net_4_x.csproj b/mcs/class/Facades/System.Net.NameResolution/Facades_System.Net.NameResolution-net_4_x.csproj
index 35e6e9a6d32..1041cd3aef8 100644
--- a/mcs/class/Facades/System.Net.NameResolution/Facades_System.Net.NameResolution-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.NameResolution/Facades_System.Net.NameResolution-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.NetworkInformation/Facades_System.Net.NetworkInformation-net_4_x.csproj b/mcs/class/Facades/System.Net.NetworkInformation/Facades_System.Net.NetworkInformation-net_4_x.csproj
index 042d7ace4fc..94ef17bbb21 100644
--- a/mcs/class/Facades/System.Net.NetworkInformation/Facades_System.Net.NetworkInformation-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.NetworkInformation/Facades_System.Net.NetworkInformation-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.Primitives/Facades_System.Net.Primitives-net_4_x.csproj b/mcs/class/Facades/System.Net.Primitives/Facades_System.Net.Primitives-net_4_x.csproj
index aa320054391..c816242887a 100644
--- a/mcs/class/Facades/System.Net.Primitives/Facades_System.Net.Primitives-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.Primitives/Facades_System.Net.Primitives-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.Requests/Facades_System.Net.Requests-net_4_x.csproj b/mcs/class/Facades/System.Net.Requests/Facades_System.Net.Requests-net_4_x.csproj
index 9d81ac99708..cc3308f21f8 100644
--- a/mcs/class/Facades/System.Net.Requests/Facades_System.Net.Requests-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.Requests/Facades_System.Net.Requests-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.Security/Facades_System.Net.Security-net_4_x.csproj b/mcs/class/Facades/System.Net.Security/Facades_System.Net.Security-net_4_x.csproj
index 346a8c821b9..8fb16c66c75 100644
--- a/mcs/class/Facades/System.Net.Security/Facades_System.Net.Security-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.Security/Facades_System.Net.Security-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.ServicePoint/Facades_System.Net.ServicePoint-net_4_x.csproj b/mcs/class/Facades/System.Net.ServicePoint/Facades_System.Net.ServicePoint-net_4_x.csproj
index db14b8d3b4a..e671aa08efa 100644
--- a/mcs/class/Facades/System.Net.ServicePoint/Facades_System.Net.ServicePoint-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.ServicePoint/Facades_System.Net.ServicePoint-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.Sockets/Facades_System.Net.Sockets-net_4_x.csproj b/mcs/class/Facades/System.Net.Sockets/Facades_System.Net.Sockets-net_4_x.csproj
index ca762d98f2d..35175afbf2a 100644
--- a/mcs/class/Facades/System.Net.Sockets/Facades_System.Net.Sockets-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.Sockets/Facades_System.Net.Sockets-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,9 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="SocketReceiveFromResult.cs" />

+    <Compile Include="SocketReceiveMessageFromResult.cs" />

+    <Compile Include="SocketTaskExtensions.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Net.Utilities/Facades_System.Net.Utilities-net_4_x.csproj b/mcs/class/Facades/System.Net.Utilities/Facades_System.Net.Utilities-net_4_x.csproj
index 1372878cd18..bea84dd5788 100644
--- a/mcs/class/Facades/System.Net.Utilities/Facades_System.Net.Utilities-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.Utilities/Facades_System.Net.Utilities-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.WebHeaderCollection/Facades_System.Net.WebHeaderCollection-net_4_x.csproj b/mcs/class/Facades/System.Net.WebHeaderCollection/Facades_System.Net.WebHeaderCollection-net_4_x.csproj
index 3a298830e16..ce6d13adb77 100644
--- a/mcs/class/Facades/System.Net.WebHeaderCollection/Facades_System.Net.WebHeaderCollection-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.WebHeaderCollection/Facades_System.Net.WebHeaderCollection-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.WebSockets.Client/Facades_System.Net.WebSockets.Client-net_4_x.csproj b/mcs/class/Facades/System.Net.WebSockets.Client/Facades_System.Net.WebSockets.Client-net_4_x.csproj
index 11199656414..f7678177902 100644
--- a/mcs/class/Facades/System.Net.WebSockets.Client/Facades_System.Net.WebSockets.Client-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.WebSockets.Client/Facades_System.Net.WebSockets.Client-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Net.WebSockets/Facades_System.Net.WebSockets-net_4_x.csproj b/mcs/class/Facades/System.Net.WebSockets/Facades_System.Net.WebSockets-net_4_x.csproj
index 0103faa7236..40a37aeb12c 100644
--- a/mcs/class/Facades/System.Net.WebSockets/Facades_System.Net.WebSockets-net_4_x.csproj
+++ b/mcs/class/Facades/System.Net.WebSockets/Facades_System.Net.WebSockets-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ObjectModel/Facades_System.ObjectModel-net_4_x.csproj b/mcs/class/Facades/System.ObjectModel/Facades_System.ObjectModel-net_4_x.csproj
index e1230f83e0f..deed21a4270 100644
--- a/mcs/class/Facades/System.ObjectModel/Facades_System.ObjectModel-net_4_x.csproj
+++ b/mcs/class/Facades/System.ObjectModel/Facades_System.ObjectModel-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Reflection.Emit.ILGeneration/Facades_System.Reflection.Emit.ILGeneration-net_4_x.csproj b/mcs/class/Facades/System.Reflection.Emit.ILGeneration/Facades_System.Reflection.Emit.ILGeneration-net_4_x.csproj
index 3f6502b6e7a..35c2126075f 100644
--- a/mcs/class/Facades/System.Reflection.Emit.ILGeneration/Facades_System.Reflection.Emit.ILGeneration-net_4_x.csproj
+++ b/mcs/class/Facades/System.Reflection.Emit.ILGeneration/Facades_System.Reflection.Emit.ILGeneration-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Reflection.Emit.Lightweight/Facades_System.Reflection.Emit.Lightweight-net_4_x.csproj b/mcs/class/Facades/System.Reflection.Emit.Lightweight/Facades_System.Reflection.Emit.Lightweight-net_4_x.csproj
index 28c20187cf4..91adc7ebf43 100644
--- a/mcs/class/Facades/System.Reflection.Emit.Lightweight/Facades_System.Reflection.Emit.Lightweight-net_4_x.csproj
+++ b/mcs/class/Facades/System.Reflection.Emit.Lightweight/Facades_System.Reflection.Emit.Lightweight-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,7 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="DynamicMethod.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Reflection.Emit/Facades_System.Reflection.Emit-net_4_x.csproj b/mcs/class/Facades/System.Reflection.Emit/Facades_System.Reflection.Emit-net_4_x.csproj
index e407d0fd9c7..4ef67c8ecb0 100644
--- a/mcs/class/Facades/System.Reflection.Emit/Facades_System.Reflection.Emit-net_4_x.csproj
+++ b/mcs/class/Facades/System.Reflection.Emit/Facades_System.Reflection.Emit-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Reflection.Extensions/Facades_System.Reflection.Extensions-net_4_x.csproj b/mcs/class/Facades/System.Reflection.Extensions/Facades_System.Reflection.Extensions-net_4_x.csproj
index 5a41690bc62..09ab692a66a 100644
--- a/mcs/class/Facades/System.Reflection.Extensions/Facades_System.Reflection.Extensions-net_4_x.csproj
+++ b/mcs/class/Facades/System.Reflection.Extensions/Facades_System.Reflection.Extensions-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Reflection.Primitives/Facades_System.Reflection.Primitives-net_4_x.csproj b/mcs/class/Facades/System.Reflection.Primitives/Facades_System.Reflection.Primitives-net_4_x.csproj
index 9b883b5f9d7..9bfa6a1d6e4 100644
--- a/mcs/class/Facades/System.Reflection.Primitives/Facades_System.Reflection.Primitives-net_4_x.csproj
+++ b/mcs/class/Facades/System.Reflection.Primitives/Facades_System.Reflection.Primitives-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Reflection.TypeExtensions/Facades_System.Reflection.TypeExtensions-net_4_x.csproj b/mcs/class/Facades/System.Reflection.TypeExtensions/Facades_System.Reflection.TypeExtensions-net_4_x.csproj
index 2030414734b..e5baae2577a 100644
--- a/mcs/class/Facades/System.Reflection.TypeExtensions/Facades_System.Reflection.TypeExtensions-net_4_x.csproj
+++ b/mcs/class/Facades/System.Reflection.TypeExtensions/Facades_System.Reflection.TypeExtensions-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,9 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="Requires.cs" />

+    <Compile Include="SR.cs" />

+    <Compile Include="TypeExtensions.CoreCLR.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Reflection/Facades_System.Reflection-net_4_x.csproj b/mcs/class/Facades/System.Reflection/Facades_System.Reflection-net_4_x.csproj
index 98be695bc27..5276a6875ed 100644
--- a/mcs/class/Facades/System.Reflection/Facades_System.Reflection-net_4_x.csproj
+++ b/mcs/class/Facades/System.Reflection/Facades_System.Reflection-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Resources.ReaderWriter/Facades_System.Resources.ReaderWriter-net_4_x.csproj b/mcs/class/Facades/System.Resources.ReaderWriter/Facades_System.Resources.ReaderWriter-net_4_x.csproj
index eaafdd2b4b6..4cd416be48f 100644
--- a/mcs/class/Facades/System.Resources.ReaderWriter/Facades_System.Resources.ReaderWriter-net_4_x.csproj
+++ b/mcs/class/Facades/System.Resources.ReaderWriter/Facades_System.Resources.ReaderWriter-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Resources.ResourceManager/Facades_System.Resources.ResourceManager-net_4_x.csproj b/mcs/class/Facades/System.Resources.ResourceManager/Facades_System.Resources.ResourceManager-net_4_x.csproj
index e40ceea6809..e233a440cb7 100644
--- a/mcs/class/Facades/System.Resources.ResourceManager/Facades_System.Resources.ResourceManager-net_4_x.csproj
+++ b/mcs/class/Facades/System.Resources.ResourceManager/Facades_System.Resources.ResourceManager-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Runtime.CompilerServices.VisualC/Facades_System.Runtime.CompilerServices.VisualC-net_4_x.csproj b/mcs/class/Facades/System.Runtime.CompilerServices.VisualC/Facades_System.Runtime.CompilerServices.VisualC-net_4_x.csproj
index f3b9b2dadbd..5d7394e6a1e 100644
--- a/mcs/class/Facades/System.Runtime.CompilerServices.VisualC/Facades_System.Runtime.CompilerServices.VisualC-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.CompilerServices.VisualC/Facades_System.Runtime.CompilerServices.VisualC-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Runtime.Extensions/Facades_System.Runtime.Extensions-net_4_x.csproj b/mcs/class/Facades/System.Runtime.Extensions/Facades_System.Runtime.Extensions-net_4_x.csproj
index f00748c40fa..f95909bbdf1 100644
--- a/mcs/class/Facades/System.Runtime.Extensions/Facades_System.Runtime.Extensions-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.Extensions/Facades_System.Runtime.Extensions-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Runtime.Handles/Facades_System.Runtime.Handles-net_4_x.csproj b/mcs/class/Facades/System.Runtime.Handles/Facades_System.Runtime.Handles-net_4_x.csproj
index d29f79f2d6c..03aeae7a131 100644
--- a/mcs/class/Facades/System.Runtime.Handles/Facades_System.Runtime.Handles-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.Handles/Facades_System.Runtime.Handles-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Runtime.InteropServices.WindowsRuntime/Facades_System.Runtime.InteropServices.WindowsRuntime-net_4_x.csproj b/mcs/class/Facades/System.Runtime.InteropServices.WindowsRuntime/Facades_System.Runtime.InteropServices.WindowsRuntime-net_4_x.csproj
index 0dddc7ef0a7..b05a19aec3f 100644
--- a/mcs/class/Facades/System.Runtime.InteropServices.WindowsRuntime/Facades_System.Runtime.InteropServices.WindowsRuntime-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.InteropServices.WindowsRuntime/Facades_System.Runtime.InteropServices.WindowsRuntime-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Runtime.InteropServices/Facades_System.Runtime.InteropServices-net_4_x.csproj b/mcs/class/Facades/System.Runtime.InteropServices/Facades_System.Runtime.InteropServices-net_4_x.csproj
index 7011c5559d7..6e1d3bd39b8 100644
--- a/mcs/class/Facades/System.Runtime.InteropServices/Facades_System.Runtime.InteropServices-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.InteropServices/Facades_System.Runtime.InteropServices-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Runtime.Numerics/Facades_System.Runtime.Numerics-net_4_x.csproj b/mcs/class/Facades/System.Runtime.Numerics/Facades_System.Runtime.Numerics-net_4_x.csproj
index a82e8d24fb4..74cbc371b55 100644
--- a/mcs/class/Facades/System.Runtime.Numerics/Facades_System.Runtime.Numerics-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.Numerics/Facades_System.Runtime.Numerics-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Runtime.Serialization.Json/Facades_System.Runtime.Serialization.Json-net_4_x.csproj b/mcs/class/Facades/System.Runtime.Serialization.Json/Facades_System.Runtime.Serialization.Json-net_4_x.csproj
index 18a14af836b..b8f70d0fd03 100644
--- a/mcs/class/Facades/System.Runtime.Serialization.Json/Facades_System.Runtime.Serialization.Json-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.Serialization.Json/Facades_System.Runtime.Serialization.Json-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Runtime.Serialization.Primitives/Facades_System.Runtime.Serialization.Primitives-net_4_x.csproj b/mcs/class/Facades/System.Runtime.Serialization.Primitives/Facades_System.Runtime.Serialization.Primitives-net_4_x.csproj
index 71204dcabbd..68dfcfcfeb9 100644
--- a/mcs/class/Facades/System.Runtime.Serialization.Primitives/Facades_System.Runtime.Serialization.Primitives-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.Serialization.Primitives/Facades_System.Runtime.Serialization.Primitives-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,7 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="ISerializationSurrogateProvider.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Runtime.Serialization.Xml/Facades_System.Runtime.Serialization.Xml-net_4_x.csproj b/mcs/class/Facades/System.Runtime.Serialization.Xml/Facades_System.Runtime.Serialization.Xml-net_4_x.csproj
index 058a3e64219..3a0ce443bfe 100644
--- a/mcs/class/Facades/System.Runtime.Serialization.Xml/Facades_System.Runtime.Serialization.Xml-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime.Serialization.Xml/Facades_System.Runtime.Serialization.Xml-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,8 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="DataContractSerializerExtensions.cs" />

+    <Compile Include="NotImplemented.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

@@ -82,6 +84,10 @@
       <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

       <Name>corlib-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../../System/System-net_4_x.csproj">

+      <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

+      <Name>System-net_4_x</Name>

+    </ProjectReference>

     <ProjectReference Include="../../System.Runtime.Serialization/System.Runtime.Serialization-net_4_x.csproj">

       <Project>{D845AD9D-3CCB-49CB-9543-028678E94938}</Project>

       <Name>System.Runtime.Serialization-net_4_x</Name>

@@ -90,6 +96,10 @@
       <Project>{87FD2F0F-5222-4AE6-BD63-2D4975E11E5B}</Project>

       <Name>System.Xml-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../System.Runtime.Serialization.Primitives/Facades_System.Runtime.Serialization.Primitives-net_4_x.csproj">

+      <Project>{49BB9015-6989-4BD0-AF82-9184BE637D57}</Project>

+      <Name>Facades_System.Runtime.Serialization.Primitives-net_4_x</Name>

+    </ProjectReference>

   </ItemGroup>

   <ItemGroup>

     <Folder Include="Properties\" />

diff --git a/mcs/class/Facades/System.Runtime/Facades_System.Runtime-net_4_x.csproj b/mcs/class/Facades/System.Runtime/Facades_System.Runtime-net_4_x.csproj
index d88f7bba8c6..69af050fefc 100644
--- a/mcs/class/Facades/System.Runtime/Facades_System.Runtime-net_4_x.csproj
+++ b/mcs/class/Facades/System.Runtime/Facades_System.Runtime-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.AccessControl/Facades_System.Security.AccessControl-net_4_x.csproj b/mcs/class/Facades/System.Security.AccessControl/Facades_System.Security.AccessControl-net_4_x.csproj
index 546f03f9c7c..6e12be8de0a 100644
--- a/mcs/class/Facades/System.Security.AccessControl/Facades_System.Security.AccessControl-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.AccessControl/Facades_System.Security.AccessControl-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Claims/Facades_System.Security.Claims-net_4_x.csproj b/mcs/class/Facades/System.Security.Claims/Facades_System.Security.Claims-net_4_x.csproj
index 341cad800ee..c82cbb03c63 100644
--- a/mcs/class/Facades/System.Security.Claims/Facades_System.Security.Claims-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Claims/Facades_System.Security.Claims-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.DeriveBytes/Facades_System.Security.Cryptography.DeriveBytes-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.DeriveBytes/Facades_System.Security.Cryptography.DeriveBytes-net_4_x.csproj
index 3c274abb796..eeb8939d655 100644
--- a/mcs/class/Facades/System.Security.Cryptography.DeriveBytes/Facades_System.Security.Cryptography.DeriveBytes-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.DeriveBytes/Facades_System.Security.Cryptography.DeriveBytes-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.Encoding/Facades_System.Security.Cryptography.Encoding-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.Encoding/Facades_System.Security.Cryptography.Encoding-net_4_x.csproj
index 20640b091c8..96b297f3c0d 100644
--- a/mcs/class/Facades/System.Security.Cryptography.Encoding/Facades_System.Security.Cryptography.Encoding-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.Encoding/Facades_System.Security.Cryptography.Encoding-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.Encryption.Aes/Facades_System.Security.Cryptography.Encryption.Aes-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.Encryption.Aes/Facades_System.Security.Cryptography.Encryption.Aes-net_4_x.csproj
index a523ca99263..ed1146ccbfc 100644
--- a/mcs/class/Facades/System.Security.Cryptography.Encryption.Aes/Facades_System.Security.Cryptography.Encryption.Aes-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.Encryption.Aes/Facades_System.Security.Cryptography.Encryption.Aes-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.Encryption.ECDiffieHellman/Facades_System.Security.Cryptography.Encryption.ECDiffieHellman-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.Encryption.ECDiffieHellman/Facades_System.Security.Cryptography.Encryption.ECDiffieHellman-net_4_x.csproj
index 268dc0f5926..b56dd888af4 100644
--- a/mcs/class/Facades/System.Security.Cryptography.Encryption.ECDiffieHellman/Facades_System.Security.Cryptography.Encryption.ECDiffieHellman-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.Encryption.ECDiffieHellman/Facades_System.Security.Cryptography.Encryption.ECDiffieHellman-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.Encryption.ECDsa/Facades_System.Security.Cryptography.Encryption.ECDsa-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.Encryption.ECDsa/Facades_System.Security.Cryptography.Encryption.ECDsa-net_4_x.csproj
index 1608821c77b..f11c8143a26 100644
--- a/mcs/class/Facades/System.Security.Cryptography.Encryption.ECDsa/Facades_System.Security.Cryptography.Encryption.ECDsa-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.Encryption.ECDsa/Facades_System.Security.Cryptography.Encryption.ECDsa-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.Encryption/Facades_System.Security.Cryptography.Encryption-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.Encryption/Facades_System.Security.Cryptography.Encryption-net_4_x.csproj
index c331d66a40a..901e9368940 100644
--- a/mcs/class/Facades/System.Security.Cryptography.Encryption/Facades_System.Security.Cryptography.Encryption-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.Encryption/Facades_System.Security.Cryptography.Encryption-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.Hashing.Algorithms/Facades_System.Security.Cryptography.Hashing.Algorithms-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.Hashing.Algorithms/Facades_System.Security.Cryptography.Hashing.Algorithms-net_4_x.csproj
index 098c162409a..80ca5e8ada0 100644
--- a/mcs/class/Facades/System.Security.Cryptography.Hashing.Algorithms/Facades_System.Security.Cryptography.Hashing.Algorithms-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.Hashing.Algorithms/Facades_System.Security.Cryptography.Hashing.Algorithms-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.Hashing/Facades_System.Security.Cryptography.Hashing-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.Hashing/Facades_System.Security.Cryptography.Hashing-net_4_x.csproj
index 9865a1540f8..f1f938a8371 100644
--- a/mcs/class/Facades/System.Security.Cryptography.Hashing/Facades_System.Security.Cryptography.Hashing-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.Hashing/Facades_System.Security.Cryptography.Hashing-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.Primitives/Facades_System.Security.Cryptography.Primitives-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.Primitives/Facades_System.Security.Cryptography.Primitives-net_4_x.csproj
new file mode 100644
index 00000000000..d0f681b92b8
--- /dev/null
+++ b/mcs/class/Facades/System.Security.Cryptography.Primitives/Facades_System.Security.Cryptography.Primitives-net_4_x.csproj
@@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <PropertyGroup>

+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

+    <ProductVersion>9.0.30729</ProductVersion>

+    <SchemaVersion>2.0</SchemaVersion>

+    <ProjectGuid>{62880D99-1C4C-4D38-A8FE-57EF2C9E2150}</ProjectGuid>

+    <OutputType>Library</OutputType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <OutputPath>./../../../class/lib/net_4_x/Facades</OutputPath>

+    <IntermediateOutputPath>obj-Facades</IntermediateOutputPath>

+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

+    <NoStdLib>True</NoStdLib>

+    

+    <NoConfig>True</NoConfig>

+    

+    <AppDesignerFolder>Properties</AppDesignerFolder>

+    <RootNamespace>

+    </RootNamespace>

+    <AssemblyName>System.Security.Cryptography.Primitives</AssemblyName>

+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>

+    <FileAlignment>512</FileAlignment>

+  </PropertyGroup>

+    <PropertyGroup>

+    <SignAssembly>true</SignAssembly>

+    <DelaySign>true</DelaySign>

+  </PropertyGroup>

+  <PropertyGroup>

+    <AssemblyOriginatorKeyFile>../../msfinal.pub</AssemblyOriginatorKeyFile>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

+    <DebugSymbols>true</DebugSymbols>

+    <DebugType>full</DebugType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <Optimize>false</Optimize>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

+    <DebugType>pdbonly</DebugType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <Optimize>true</Optimize>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <!-- Set AddAdditionalExplicitAssemblyReferences to false, otherwise if targetting .NET4.0, 

+  Microsoft.NETFramework.props will force a dependency on the assembly System.Core. This

+  is a problem to compile the Mono mscorlib.dll -->

+  <PropertyGroup>

+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>

+  </PropertyGroup>

+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

+  <ItemGroup>

+    <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

+       Other similar extension points exist, see Microsoft.Common.targets.

+  <Target Name="BeforeBuild">

+  </Target>

+  <Target Name="AfterBuild">

+  </Target>

+  -->

+  <PropertyGroup>

+    <PreBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PreBuildEvent>

+    <PreBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PreBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PostBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PostBuildEvent>

+  </PropertyGroup>

+  <ItemGroup>

+    <ProjectReference Include="../../corlib/corlib-net_4_x.csproj">

+      <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

+      <Name>corlib-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../../System/System-net_4_x.csproj">

+      <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

+      <Name>System-net_4_x</Name>

+    </ProjectReference>

+  </ItemGroup>

+  <ItemGroup>

+    <Folder Include="Properties\" />

+  </ItemGroup>

+</Project>

+
diff --git a/mcs/class/Facades/System.Security.Cryptography.ProtectedData/Facades_System.Security.Cryptography.ProtectedData-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.ProtectedData/Facades_System.Security.Cryptography.ProtectedData-net_4_x.csproj
index 53e18fa4825..a09663524d7 100644
--- a/mcs/class/Facades/System.Security.Cryptography.ProtectedData/Facades_System.Security.Cryptography.ProtectedData-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.ProtectedData/Facades_System.Security.Cryptography.ProtectedData-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.RSA/Facades_System.Security.Cryptography.RSA-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.RSA/Facades_System.Security.Cryptography.RSA-net_4_x.csproj
index 1f6584376e9..199082affd9 100644
--- a/mcs/class/Facades/System.Security.Cryptography.RSA/Facades_System.Security.Cryptography.RSA-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.RSA/Facades_System.Security.Cryptography.RSA-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.RandomNumberGenerator/Facades_System.Security.Cryptography.RandomNumberGenerator-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.RandomNumberGenerator/Facades_System.Security.Cryptography.RandomNumberGenerator-net_4_x.csproj
index 3b0e5112389..c1189dbb2b3 100644
--- a/mcs/class/Facades/System.Security.Cryptography.RandomNumberGenerator/Facades_System.Security.Cryptography.RandomNumberGenerator-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.RandomNumberGenerator/Facades_System.Security.Cryptography.RandomNumberGenerator-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Cryptography.X509Certificates/Facades_System.Security.Cryptography.X509Certificates-net_4_x.csproj b/mcs/class/Facades/System.Security.Cryptography.X509Certificates/Facades_System.Security.Cryptography.X509Certificates-net_4_x.csproj
index 0a126a61c73..d7bb4038ee2 100644
--- a/mcs/class/Facades/System.Security.Cryptography.X509Certificates/Facades_System.Security.Cryptography.X509Certificates-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Cryptography.X509Certificates/Facades_System.Security.Cryptography.X509Certificates-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -86,6 +86,10 @@
       <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

       <Name>System-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../../System.Core/System.Core-net_4_x.csproj">

+      <Project>{359142A1-D80F-401E-AA64-7167C9317649}</Project>

+      <Name>System.Core-net_4_x</Name>

+    </ProjectReference>

   </ItemGroup>

   <ItemGroup>

     <Folder Include="Properties\" />

diff --git a/mcs/class/Facades/System.Security.Principal.Windows/Facades_System.Security.Principal.Windows-net_4_x.csproj b/mcs/class/Facades/System.Security.Principal.Windows/Facades_System.Security.Principal.Windows-net_4_x.csproj
index 18aa2ae6185..1b0acb79e5d 100644
--- a/mcs/class/Facades/System.Security.Principal.Windows/Facades_System.Security.Principal.Windows-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Principal.Windows/Facades_System.Security.Principal.Windows-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.Principal/Facades_System.Security.Principal-net_4_x.csproj b/mcs/class/Facades/System.Security.Principal/Facades_System.Security.Principal-net_4_x.csproj
index 53c26f634d1..9a152577383 100644
--- a/mcs/class/Facades/System.Security.Principal/Facades_System.Security.Principal-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.Principal/Facades_System.Security.Principal-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Security.SecureString/Facades_System.Security.SecureString-net_4_x.csproj b/mcs/class/Facades/System.Security.SecureString/Facades_System.Security.SecureString-net_4_x.csproj
index 7e2fc1e0a86..1d82a342075 100644
--- a/mcs/class/Facades/System.Security.SecureString/Facades_System.Security.SecureString-net_4_x.csproj
+++ b/mcs/class/Facades/System.Security.SecureString/Facades_System.Security.SecureString-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,7 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="SecureStringMarshal.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.ServiceModel.Duplex/Facades_System.ServiceModel.Duplex-net_4_x.csproj b/mcs/class/Facades/System.ServiceModel.Duplex/Facades_System.ServiceModel.Duplex-net_4_x.csproj
index 3a098dcdfc2..9de0f00e86d 100644
--- a/mcs/class/Facades/System.ServiceModel.Duplex/Facades_System.ServiceModel.Duplex-net_4_x.csproj
+++ b/mcs/class/Facades/System.ServiceModel.Duplex/Facades_System.ServiceModel.Duplex-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ServiceModel.Http/Facades_System.ServiceModel.Http-net_4_x.csproj b/mcs/class/Facades/System.ServiceModel.Http/Facades_System.ServiceModel.Http-net_4_x.csproj
index d830d0e0843..03e5d43cd10 100644
--- a/mcs/class/Facades/System.ServiceModel.Http/Facades_System.ServiceModel.Http-net_4_x.csproj
+++ b/mcs/class/Facades/System.ServiceModel.Http/Facades_System.ServiceModel.Http-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ServiceModel.NetTcp/Facades_System.ServiceModel.NetTcp-net_4_x.csproj b/mcs/class/Facades/System.ServiceModel.NetTcp/Facades_System.ServiceModel.NetTcp-net_4_x.csproj
index 0b25b6be19e..31da316a1d2 100644
--- a/mcs/class/Facades/System.ServiceModel.NetTcp/Facades_System.ServiceModel.NetTcp-net_4_x.csproj
+++ b/mcs/class/Facades/System.ServiceModel.NetTcp/Facades_System.ServiceModel.NetTcp-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ServiceModel.Primitives/Facades_System.ServiceModel.Primitives-net_4_x.csproj b/mcs/class/Facades/System.ServiceModel.Primitives/Facades_System.ServiceModel.Primitives-net_4_x.csproj
index 1508ff5d41a..a8da1af4760 100644
--- a/mcs/class/Facades/System.ServiceModel.Primitives/Facades_System.ServiceModel.Primitives-net_4_x.csproj
+++ b/mcs/class/Facades/System.ServiceModel.Primitives/Facades_System.ServiceModel.Primitives-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -82,6 +82,10 @@
       <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

       <Name>corlib-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../../System/System-net_4_x.csproj">

+      <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

+      <Name>System-net_4_x</Name>

+    </ProjectReference>

     <ProjectReference Include="../../System.ServiceModel/System.ServiceModel-net_4_x.csproj">

       <Project>{FE596C31-BDA2-4850-8F79-F8F4DF70F44A}</Project>

       <Name>System.ServiceModel-net_4_x</Name>

@@ -90,6 +94,14 @@
       <Project>{87FD2F0F-5222-4AE6-BD63-2D4975E11E5B}</Project>

       <Name>System.Xml-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../../System.IdentityModel/System.IdentityModel-net_4_x.csproj">

+      <Project>{FA718FA9-32C2-4BAC-BAAB-DB3A7A326D4C}</Project>

+      <Name>System.IdentityModel-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../System.Security.Cryptography.X509Certificates/Facades_System.Security.Cryptography.X509Certificates-net_4_x.csproj">

+      <Project>{C2E71C2B-A806-4FEB-AE2D-A5BE884E3BA7}</Project>

+      <Name>Facades_System.Security.Cryptography.X509Certificates-net_4_x</Name>

+    </ProjectReference>

   </ItemGroup>

   <ItemGroup>

     <Folder Include="Properties\" />

diff --git a/mcs/class/Facades/System.ServiceModel.Security/Facades_System.ServiceModel.Security-net_4_x.csproj b/mcs/class/Facades/System.ServiceModel.Security/Facades_System.ServiceModel.Security-net_4_x.csproj
index 05cafee86eb..209fc0aa840 100644
--- a/mcs/class/Facades/System.ServiceModel.Security/Facades_System.ServiceModel.Security-net_4_x.csproj
+++ b/mcs/class/Facades/System.ServiceModel.Security/Facades_System.ServiceModel.Security-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.ServiceProcess.ServiceController/Facades_System.ServiceProcess.ServiceController-net_4_x.csproj b/mcs/class/Facades/System.ServiceProcess.ServiceController/Facades_System.ServiceProcess.ServiceController-net_4_x.csproj
index 4eedc26e62d..0a81b782205 100644
--- a/mcs/class/Facades/System.ServiceProcess.ServiceController/Facades_System.ServiceProcess.ServiceController-net_4_x.csproj
+++ b/mcs/class/Facades/System.ServiceProcess.ServiceController/Facades_System.ServiceProcess.ServiceController-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -54,7 +54,13 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\..\build\common\MonoTODOAttribute.cs" />

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="ServiceController_mobile.cs" />

+    <Compile Include="ServiceControllerStatus_mobile.cs" />

+    <Compile Include="ServiceStartMode_mobile.cs" />

+    <Compile Include="ServiceType_mobile.cs" />

+    <Compile Include="TimeoutException_mobile.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Text.Encoding.CodePages/Facades_System.Text.Encoding.CodePages-net_4_x.csproj b/mcs/class/Facades/System.Text.Encoding.CodePages/Facades_System.Text.Encoding.CodePages-net_4_x.csproj
new file mode 100644
index 00000000000..eb203092a2b
--- /dev/null
+++ b/mcs/class/Facades/System.Text.Encoding.CodePages/Facades_System.Text.Encoding.CodePages-net_4_x.csproj
@@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <PropertyGroup>

+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

+    <ProductVersion>9.0.30729</ProductVersion>

+    <SchemaVersion>2.0</SchemaVersion>

+    <ProjectGuid>{DF49AC88-C6F2-43B1-8560-3B74542BD874}</ProjectGuid>

+    <OutputType>Library</OutputType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <OutputPath>./../../../class/lib/net_4_x/Facades</OutputPath>

+    <IntermediateOutputPath>obj-Facades</IntermediateOutputPath>

+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

+    <NoStdLib>True</NoStdLib>

+    

+    <NoConfig>True</NoConfig>

+    

+    <AppDesignerFolder>Properties</AppDesignerFolder>

+    <RootNamespace>

+    </RootNamespace>

+    <AssemblyName>System.Text.Encoding.CodePages</AssemblyName>

+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>

+    <FileAlignment>512</FileAlignment>

+  </PropertyGroup>

+    <PropertyGroup>

+    <SignAssembly>true</SignAssembly>

+    <DelaySign>true</DelaySign>

+  </PropertyGroup>

+  <PropertyGroup>

+    <AssemblyOriginatorKeyFile>../../msfinal.pub</AssemblyOriginatorKeyFile>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

+    <DebugSymbols>true</DebugSymbols>

+    <DebugType>full</DebugType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <Optimize>false</Optimize>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

+    <DebugType>pdbonly</DebugType>

+    <NoWarn>1699,1616,1699</NoWarn>

+    <Optimize>true</Optimize>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <!-- Set AddAdditionalExplicitAssemblyReferences to false, otherwise if targetting .NET4.0, 

+  Microsoft.NETFramework.props will force a dependency on the assembly System.Core. This

+  is a problem to compile the Mono mscorlib.dll -->

+  <PropertyGroup>

+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>

+  </PropertyGroup>

+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

+  <ItemGroup>

+    <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="CodePagesEncodingProvider.cs" />
  </ItemGroup>

+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

+       Other similar extension points exist, see Microsoft.Common.targets.

+  <Target Name="BeforeBuild">

+  </Target>

+  <Target Name="AfterBuild">

+  </Target>

+  -->

+  <PropertyGroup>

+    <PreBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PreBuildEvent>

+    <PreBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PreBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PostBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PostBuildEvent>

+  </PropertyGroup>

+  <ItemGroup>

+    <ProjectReference Include="../../corlib/corlib-net_4_x.csproj">

+      <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

+      <Name>corlib-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../../System/System-net_4_x.csproj">

+      <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

+      <Name>System-net_4_x</Name>

+    </ProjectReference>

+  </ItemGroup>

+  <ItemGroup>

+    <Folder Include="Properties\" />

+  </ItemGroup>

+</Project>

+
diff --git a/mcs/class/Facades/System.Text.Encoding.Extensions/Facades_System.Text.Encoding.Extensions-net_4_x.csproj b/mcs/class/Facades/System.Text.Encoding.Extensions/Facades_System.Text.Encoding.Extensions-net_4_x.csproj
index c478e7918cc..dffbbe8c637 100644
--- a/mcs/class/Facades/System.Text.Encoding.Extensions/Facades_System.Text.Encoding.Extensions-net_4_x.csproj
+++ b/mcs/class/Facades/System.Text.Encoding.Extensions/Facades_System.Text.Encoding.Extensions-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Text.Encoding/Facades_System.Text.Encoding-net_4_x.csproj b/mcs/class/Facades/System.Text.Encoding/Facades_System.Text.Encoding-net_4_x.csproj
index 5c8474d8caa..fb72efbf238 100644
--- a/mcs/class/Facades/System.Text.Encoding/Facades_System.Text.Encoding-net_4_x.csproj
+++ b/mcs/class/Facades/System.Text.Encoding/Facades_System.Text.Encoding-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Text.RegularExpressions/Facades_System.Text.RegularExpressions-net_4_x.csproj b/mcs/class/Facades/System.Text.RegularExpressions/Facades_System.Text.RegularExpressions-net_4_x.csproj
index 3128965240d..8b835f18954 100644
--- a/mcs/class/Facades/System.Text.RegularExpressions/Facades_System.Text.RegularExpressions-net_4_x.csproj
+++ b/mcs/class/Facades/System.Text.RegularExpressions/Facades_System.Text.RegularExpressions-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Threading.AccessControl/Facades_System.Threading.AccessControl-net_4_x.csproj b/mcs/class/Facades/System.Threading.AccessControl/Facades_System.Threading.AccessControl-net_4_x.csproj
index 2a7daad7c16..3c7f244fbfa 100644
--- a/mcs/class/Facades/System.Threading.AccessControl/Facades_System.Threading.AccessControl-net_4_x.csproj
+++ b/mcs/class/Facades/System.Threading.AccessControl/Facades_System.Threading.AccessControl-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -54,7 +54,9 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\..\build\common\MonoTODOAttribute.cs" />

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="ThreadingAclExtensions.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Threading.Overlapped/Facades_System.Threading.Overlapped-net_4_x.csproj b/mcs/class/Facades/System.Threading.Overlapped/Facades_System.Threading.Overlapped-net_4_x.csproj
index 00de778e120..09aacb0e202 100644
--- a/mcs/class/Facades/System.Threading.Overlapped/Facades_System.Threading.Overlapped-net_4_x.csproj
+++ b/mcs/class/Facades/System.Threading.Overlapped/Facades_System.Threading.Overlapped-net_4_x.csproj
@@ -14,7 +14,7 @@
     <NoStdLib>True</NoStdLib>

     

     <NoConfig>True</NoConfig>

-    

+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>

     <AppDesignerFolder>Properties</AppDesignerFolder>

     <RootNamespace>

     </RootNamespace>

@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,6 +55,12 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

+    <Compile Include="ClrThreadPoolBoundHandle.cs" />

+    <Compile Include="ClrThreadPoolBoundHandleOverlapped.cs" />

+    <Compile Include="ClrThreadPoolPreAllocatedOverlapped.cs" />

+    <Compile Include="DeferredDisposableLifetime.cs" />

+    <Compile Include="HResults.cs" />

+    <Compile Include="SR.cs" />

     <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/Facades/System.Threading.Tasks.Parallel/Facades_System.Threading.Tasks.Parallel-net_4_x.csproj b/mcs/class/Facades/System.Threading.Tasks.Parallel/Facades_System.Threading.Tasks.Parallel-net_4_x.csproj
index 70915d9a5db..7fc15edf07a 100644
--- a/mcs/class/Facades/System.Threading.Tasks.Parallel/Facades_System.Threading.Tasks.Parallel-net_4_x.csproj
+++ b/mcs/class/Facades/System.Threading.Tasks.Parallel/Facades_System.Threading.Tasks.Parallel-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Threading.Tasks/Facades_System.Threading.Tasks-net_4_x.csproj b/mcs/class/Facades/System.Threading.Tasks/Facades_System.Threading.Tasks-net_4_x.csproj
index 3052af6fdcd..54c9f33eeaf 100644
--- a/mcs/class/Facades/System.Threading.Tasks/Facades_System.Threading.Tasks-net_4_x.csproj
+++ b/mcs/class/Facades/System.Threading.Tasks/Facades_System.Threading.Tasks-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Threading.Thread/Facades_System.Threading.Thread-net_4_x.csproj b/mcs/class/Facades/System.Threading.Thread/Facades_System.Threading.Thread-net_4_x.csproj
index 58a1e3e48a4..513873e0b04 100644
--- a/mcs/class/Facades/System.Threading.Thread/Facades_System.Threading.Thread-net_4_x.csproj
+++ b/mcs/class/Facades/System.Threading.Thread/Facades_System.Threading.Thread-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Threading.ThreadPool/Facades_System.Threading.ThreadPool-net_4_x.csproj b/mcs/class/Facades/System.Threading.ThreadPool/Facades_System.Threading.ThreadPool-net_4_x.csproj
index 081c415cfe0..ef1fd271799 100644
--- a/mcs/class/Facades/System.Threading.ThreadPool/Facades_System.Threading.ThreadPool-net_4_x.csproj
+++ b/mcs/class/Facades/System.Threading.ThreadPool/Facades_System.Threading.ThreadPool-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Threading.Timer/Facades_System.Threading.Timer-net_4_x.csproj b/mcs/class/Facades/System.Threading.Timer/Facades_System.Threading.Timer-net_4_x.csproj
index a0450e1ff2d..f4b3cb8f541 100644
--- a/mcs/class/Facades/System.Threading.Timer/Facades_System.Threading.Timer-net_4_x.csproj
+++ b/mcs/class/Facades/System.Threading.Timer/Facades_System.Threading.Timer-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Threading/Facades_System.Threading-net_4_x.csproj b/mcs/class/Facades/System.Threading/Facades_System.Threading-net_4_x.csproj
index 0b49733d39b..581325f3c02 100644
--- a/mcs/class/Facades/System.Threading/Facades_System.Threading-net_4_x.csproj
+++ b/mcs/class/Facades/System.Threading/Facades_System.Threading-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Xml.ReaderWriter/Facades_System.Xml.ReaderWriter-net_4_x.csproj b/mcs/class/Facades/System.Xml.ReaderWriter/Facades_System.Xml.ReaderWriter-net_4_x.csproj
index b607038b511..7c5cad4cc9d 100644
--- a/mcs/class/Facades/System.Xml.ReaderWriter/Facades_System.Xml.ReaderWriter-net_4_x.csproj
+++ b/mcs/class/Facades/System.Xml.ReaderWriter/Facades_System.Xml.ReaderWriter-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Xml.XDocument/Facades_System.Xml.XDocument-net_4_x.csproj b/mcs/class/Facades/System.Xml.XDocument/Facades_System.Xml.XDocument-net_4_x.csproj
index 6dfebc018ae..e21eb63e1cb 100644
--- a/mcs/class/Facades/System.Xml.XDocument/Facades_System.Xml.XDocument-net_4_x.csproj
+++ b/mcs/class/Facades/System.Xml.XDocument/Facades_System.Xml.XDocument-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Xml.XPath.XDocument/Facades_System.Xml.XPath.XDocument-net_4_x.csproj b/mcs/class/Facades/System.Xml.XPath.XDocument/Facades_System.Xml.XPath.XDocument-net_4_x.csproj
index 6fe69f7e13d..d3867b2f8f1 100644
--- a/mcs/class/Facades/System.Xml.XPath.XDocument/Facades_System.Xml.XPath.XDocument-net_4_x.csproj
+++ b/mcs/class/Facades/System.Xml.XPath.XDocument/Facades_System.Xml.XPath.XDocument-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -55,7 +55,8 @@
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

     <Compile Include="AssemblyInfo.cs" />

-    <Compile Include="TypeForwarders.cs" />
  </ItemGroup>

+    <Compile Include="TypeForwarders.cs" />

+    <Compile Include="XDocumentExtensions.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

   <Target Name="BeforeBuild">

@@ -86,6 +87,10 @@
       <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

       <Name>System-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../../System.XML/System.Xml-net_4_x.csproj">

+      <Project>{87FD2F0F-5222-4AE6-BD63-2D4975E11E5B}</Project>

+      <Name>System.Xml-net_4_x</Name>

+    </ProjectReference>

     <ProjectReference Include="../../System.Xml.Linq/System.Xml.Linq-net_4_x.csproj">

       <Project>{526286D5-38D9-4579-B001-471440D57752}</Project>

       <Name>System.Xml.Linq-net_4_x</Name>

diff --git a/mcs/class/Facades/System.Xml.XPath/Facades_System.Xml.XPath-net_4_x.csproj b/mcs/class/Facades/System.Xml.XPath/Facades_System.Xml.XPath-net_4_x.csproj
index fcddfd588d8..27be070dcbd 100644
--- a/mcs/class/Facades/System.Xml.XPath/Facades_System.Xml.XPath-net_4_x.csproj
+++ b/mcs/class/Facades/System.Xml.XPath/Facades_System.Xml.XPath-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Xml.XmlDocument/Facades_System.Xml.XmlDocument-net_4_x.csproj b/mcs/class/Facades/System.Xml.XmlDocument/Facades_System.Xml.XmlDocument-net_4_x.csproj
index adc60f7e829..cf936f4dfa0 100644
--- a/mcs/class/Facades/System.Xml.XmlDocument/Facades_System.Xml.XmlDocument-net_4_x.csproj
+++ b/mcs/class/Facades/System.Xml.XmlDocument/Facades_System.Xml.XmlDocument-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Xml.XmlSerializer/Facades_System.Xml.XmlSerializer-net_4_x.csproj b/mcs/class/Facades/System.Xml.XmlSerializer/Facades_System.Xml.XmlSerializer-net_4_x.csproj
index c4df512148f..51feef5417f 100644
--- a/mcs/class/Facades/System.Xml.XmlSerializer/Facades_System.Xml.XmlSerializer-net_4_x.csproj
+++ b/mcs/class/Facades/System.Xml.XmlSerializer/Facades_System.Xml.XmlSerializer-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Facades/System.Xml.Xsl.Primitives/Facades_System.Xml.Xsl.Primitives-net_4_x.csproj b/mcs/class/Facades/System.Xml.Xsl.Primitives/Facades_System.Xml.Xsl.Primitives-net_4_x.csproj
index 3e95b77fbd1..f5c1f0d4ace 100644
--- a/mcs/class/Facades/System.Xml.Xsl.Primitives/Facades_System.Xml.Xsl.Primitives-net_4_x.csproj
+++ b/mcs/class/Facades/System.Xml.Xsl.Primitives/Facades_System.Xml.Xsl.Primitives-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1616,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/I18N/CJK/I18N.CJK-net_4_x.csproj b/mcs/class/I18N/CJK/I18N.CJK-net_4_x.csproj
index c6c9d3a44bb..a817736b55e 100644
--- a/mcs/class/I18N/CJK/I18N.CJK-net_4_x.csproj
+++ b/mcs/class/I18N/CJK/I18N.CJK-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;DISABLE_UNSAFE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;DISABLE_UNSAFE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>DISABLE_UNSAFE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>DISABLE_UNSAFE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/I18N/Common/I18N-net_4_x.csproj b/mcs/class/I18N/Common/I18N-net_4_x.csproj
index 75ff7a5aac9..5aab806bafb 100644
--- a/mcs/class/I18N/Common/I18N-net_4_x.csproj
+++ b/mcs/class/I18N/Common/I18N-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;DISABLE_UNSAFE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;DISABLE_UNSAFE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>DISABLE_UNSAFE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>DISABLE_UNSAFE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/I18N/MidEast/I18N.MidEast-net_4_x.csproj b/mcs/class/I18N/MidEast/I18N.MidEast-net_4_x.csproj
index 1afa51aef32..075a8541cbe 100644
--- a/mcs/class/I18N/MidEast/I18N.MidEast-net_4_x.csproj
+++ b/mcs/class/I18N/MidEast/I18N.MidEast-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/I18N/Other/I18N.Other-net_4_x.csproj b/mcs/class/I18N/Other/I18N.Other-net_4_x.csproj
index 824b31774d5..761a2b3db35 100644
--- a/mcs/class/I18N/Other/I18N.Other-net_4_x.csproj
+++ b/mcs/class/I18N/Other/I18N.Other-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/I18N/Rare/I18N.Rare-net_4_x.csproj b/mcs/class/I18N/Rare/I18N.Rare-net_4_x.csproj
index abde280e27d..06777d0e19b 100644
--- a/mcs/class/I18N/Rare/I18N.Rare-net_4_x.csproj
+++ b/mcs/class/I18N/Rare/I18N.Rare-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/I18N/West/I18N.West-net_4_x.csproj b/mcs/class/I18N/West/I18N.West-net_4_x.csproj
index 95900687116..457d7b0e25f 100644
--- a/mcs/class/I18N/West/I18N.West-net_4_x.csproj
+++ b/mcs/class/I18N/West/I18N.West-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/IBM.Data.DB2/IBM.Data.DB2-net_4_x.csproj b/mcs/class/IBM.Data.DB2/IBM.Data.DB2-net_4_x.csproj
index 1479ae7ddb8..057e211f15a 100644
--- a/mcs/class/IBM.Data.DB2/IBM.Data.DB2-net_4_x.csproj
+++ b/mcs/class/IBM.Data.DB2/IBM.Data.DB2-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/ICSharpCode.SharpZipLib/ICSharpCode.SharpZipLib-net_4_x.csproj b/mcs/class/ICSharpCode.SharpZipLib/ICSharpCode.SharpZipLib-net_4_x.csproj
index 6f7047f15c0..7f4d41265e6 100644
--- a/mcs/class/ICSharpCode.SharpZipLib/ICSharpCode.SharpZipLib-net_4_x.csproj
+++ b/mcs/class/ICSharpCode.SharpZipLib/ICSharpCode.SharpZipLib-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Microsoft.Build.Engine/Microsoft.Build.Engine-net_4_x.csproj b/mcs/class/Microsoft.Build.Engine/Microsoft.Build.Engine-net_4_x.csproj
index 652aab45f53..9f0cb945b65 100644
--- a/mcs/class/Microsoft.Build.Engine/Microsoft.Build.Engine-net_4_x.csproj
+++ b/mcs/class/Microsoft.Build.Engine/Microsoft.Build.Engine-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Microsoft.Build.Framework/Microsoft.Build.Framework-net_4_x.csproj b/mcs/class/Microsoft.Build.Framework/Microsoft.Build.Framework-net_4_x.csproj
index ad57c7d514e..96d7dfd03ae 100644
--- a/mcs/class/Microsoft.Build.Framework/Microsoft.Build.Framework-net_4_x.csproj
+++ b/mcs/class/Microsoft.Build.Framework/Microsoft.Build.Framework-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks-net_4_x.csproj b/mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks-net_4_x.csproj
index d051dbefb94..e1e1697945b 100644
--- a/mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks-net_4_x.csproj
+++ b/mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Microsoft.Build.Utilities/Microsoft.Build.Utilities-net_4_x.csproj b/mcs/class/Microsoft.Build.Utilities/Microsoft.Build.Utilities-net_4_x.csproj
index 1e5e1913b43..984105992ae 100644
--- a/mcs/class/Microsoft.Build.Utilities/Microsoft.Build.Utilities-net_4_x.csproj
+++ b/mcs/class/Microsoft.Build.Utilities/Microsoft.Build.Utilities-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Microsoft.Build/Microsoft.Build-net_4_x.csproj b/mcs/class/Microsoft.Build/Microsoft.Build-net_4_x.csproj
index 24dd6dd3751..cd6b46ec0fc 100644
--- a/mcs/class/Microsoft.Build/Microsoft.Build-net_4_x.csproj
+++ b/mcs/class/Microsoft.Build/Microsoft.Build-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MICROSOFT_BUILD_DLL</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;MICROSOFT_BUILD_DLL</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MICROSOFT_BUILD_DLL</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;MICROSOFT_BUILD_DLL</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Microsoft.CSharp/Microsoft.CSharp-net_4_x.csproj b/mcs/class/Microsoft.CSharp/Microsoft.CSharp-net_4_x.csproj
index 4b2bc7d98a7..a41fd8bb3a0 100644
--- a/mcs/class/Microsoft.CSharp/Microsoft.CSharp-net_4_x.csproj
+++ b/mcs/class/Microsoft.CSharp/Microsoft.CSharp-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Microsoft.VisualC/Microsoft.VisualC-net_4_x.csproj b/mcs/class/Microsoft.VisualC/Microsoft.VisualC-net_4_x.csproj
index 8fe58e637bd..79a6bc4a358 100644
--- a/mcs/class/Microsoft.VisualC/Microsoft.VisualC-net_4_x.csproj
+++ b/mcs/class/Microsoft.VisualC/Microsoft.VisualC-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Microsoft.Web.Infrastructure/Microsoft.Web.Infrastructure-net_4_x.csproj b/mcs/class/Microsoft.Web.Infrastructure/Microsoft.Web.Infrastructure-net_4_x.csproj
index e68b8bf4ab6..41408f75d93 100644
--- a/mcs/class/Microsoft.Web.Infrastructure/Microsoft.Web.Infrastructure-net_4_x.csproj
+++ b/mcs/class/Microsoft.Web.Infrastructure/Microsoft.Web.Infrastructure-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Btls.Interface/Mono.Btls.Interface-net_4_x.csproj b/mcs/class/Mono.Btls.Interface/Mono.Btls.Interface-net_4_x.csproj
new file mode 100644
index 00000000000..3c4a9fd21f0
--- /dev/null
+++ b/mcs/class/Mono.Btls.Interface/Mono.Btls.Interface-net_4_x.csproj
@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <PropertyGroup>

+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

+    <ProductVersion>9.0.30729</ProductVersion>

+    <SchemaVersion>2.0</SchemaVersion>

+    <ProjectGuid>{BF32D586-8FBB-4A2A-A734-AA17CDAB283F}</ProjectGuid>

+    <OutputType>Library</OutputType>

+    <NoWarn>1699,1030</NoWarn>

+    <OutputPath>./../../class/lib/net_4_x</OutputPath>

+    <IntermediateOutputPath>obj-net_4_x</IntermediateOutputPath>

+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

+    <NoStdLib>True</NoStdLib>

+    

+    <NoConfig>True</NoConfig>

+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>

+    <AppDesignerFolder>Properties</AppDesignerFolder>

+    <RootNamespace>

+    </RootNamespace>

+    <AssemblyName>Mono.Btls.Interface</AssemblyName>

+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>

+    <FileAlignment>512</FileAlignment>

+  </PropertyGroup>

+    <PropertyGroup>

+    <SignAssembly>true</SignAssembly>

+    <DelaySign>true</DelaySign>

+  </PropertyGroup>

+  <PropertyGroup>

+    <AssemblyOriginatorKeyFile>../mono.pub</AssemblyOriginatorKeyFile>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

+    <DebugSymbols>true</DebugSymbols>

+    <DebugType>full</DebugType>

+    <NoWarn>1699,1030</NoWarn>

+    <Optimize>false</Optimize>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;SECURITY_DEP</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

+    <DebugType>pdbonly</DebugType>

+    <NoWarn>1699,1030</NoWarn>

+    <Optimize>true</Optimize>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;SECURITY_DEP</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <!-- Set AddAdditionalExplicitAssemblyReferences to false, otherwise if targetting .NET4.0, 

+  Microsoft.NETFramework.props will force a dependency on the assembly System.Core. This

+  is a problem to compile the Mono mscorlib.dll -->

+  <PropertyGroup>

+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>

+  </PropertyGroup>

+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

+  <ItemGroup>

+    <Compile Include="..\..\build\common\Consts.cs" />

+    <Compile Include="..\..\build\common\Locale.cs" />

+    <Compile Include="..\..\build\common\MonoTODOAttribute.cs" />

+    <Compile Include=".\Properties\AssemblyInfo.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsObject.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsProvider.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509Chain.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509Error.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509Format.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509Lookup.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509Name.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509Purpose.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509Store.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509StoreCtx.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509StoreManager.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509StoreType.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509TrustKind.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509VerifyFlags.cs" />

+    <Compile Include="Mono.Btls.Interface\BtlsX509VerifyParam.cs" />

+    <Compile Include="Mono.Btls.Interface\VersionInfo.cs" />
  </ItemGroup>

+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

+       Other similar extension points exist, see Microsoft.Common.targets.

+  <Target Name="BeforeBuild">

+  </Target>

+  <Target Name="AfterBuild">

+  </Target>

+  -->

+  <PropertyGroup>

+    <PreBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PreBuildEvent>

+    <PreBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PreBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PostBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PostBuildEvent>

+  </PropertyGroup>

+  <ItemGroup>

+    <ProjectReference Include="../corlib/corlib-net_4_x.csproj">

+      <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

+      <Name>corlib-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../System/System-net_4_x.csproj">

+      <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

+      <Name>System-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../Mono.Security/Mono.Security-net_4_x.csproj">

+      <Project>{42D59DE7-586F-4ACF-BDD5-E7869E39E3EF}</Project>

+      <Name>Mono.Security-net_4_x</Name>

+    </ProjectReference>

+  </ItemGroup>

+  <ItemGroup>

+    <Folder Include="Properties\" />

+  </ItemGroup>

+</Project>

+
diff --git a/mcs/class/Mono.C5/Mono.C5-net_4_x.csproj b/mcs/class/Mono.C5/Mono.C5-net_4_x.csproj
index 1f86305857f..4212c2096c6 100644
--- a/mcs/class/Mono.C5/Mono.C5-net_4_x.csproj
+++ b/mcs/class/Mono.C5/Mono.C5-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,169,219,414,1030,3001,3005,3006</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,169,219,414,1030,3001,3005,3006</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.CSharp/Mono.CSharp-net_4_x.csproj b/mcs/class/Mono.CSharp/Mono.CSharp-net_4_x.csproj
index 36c99153b49..1f6bfa31b8e 100644
--- a/mcs/class/Mono.CSharp/Mono.CSharp-net_4_x.csproj
+++ b/mcs/class/Mono.CSharp/Mono.CSharp-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_FEATURE_THREAD_ABORT</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;MONO_FEATURE_THREAD_ABORT</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_FEATURE_THREAD_ABORT</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;MONO_FEATURE_THREAD_ABORT</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Cairo/Mono.Cairo-net_4_x.csproj b/mcs/class/Mono.Cairo/Mono.Cairo-net_4_x.csproj
index 51868debb9f..46fd8e762a4 100644
--- a/mcs/class/Mono.Cairo/Mono.Cairo-net_4_x.csproj
+++ b/mcs/class/Mono.Cairo/Mono.Cairo-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Cecil.Mdb/Mono.Cecil.Mdb-net_4_x.csproj b/mcs/class/Mono.Cecil.Mdb/Mono.Cecil.Mdb-net_4_x.csproj
index c4aee220b49..bdedbfe2d8d 100644
--- a/mcs/class/Mono.Cecil.Mdb/Mono.Cecil.Mdb-net_4_x.csproj
+++ b/mcs/class/Mono.Cecil.Mdb/Mono.Cecil.Mdb-net_4_x.csproj
@@ -33,7 +33,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CECIL</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;CECIL</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -41,7 +41,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CECIL</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;CECIL</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -53,13 +53,9 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

-    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.Cecil.Mdb\AssemblyInfo.cs" />

-    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.Cecil.Mdb\MdbReader.cs" />

-    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.Cecil.Mdb\MdbWriter.cs" />

-    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.CompilerServices.SymbolWriter\MonoSymbolFile.cs" />

-    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.CompilerServices.SymbolWriter\MonoSymbolTable.cs" />

-    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.CompilerServices.SymbolWriter\MonoSymbolWriter.cs" />

-    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.CompilerServices.SymbolWriter\SymbolWriterImpl.cs" />
  </ItemGroup>

+    <Compile Include="..\..\..\external\cecil\ProjectInfo.cs" />

+    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.Cecil.Mdb\*.cs" />

+    <Compile Include="..\..\..\external\cecil\symbols\mdb\Mono.CompilerServices.SymbolWriter\*.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

   <Target Name="BeforeBuild">

@@ -90,10 +86,11 @@
       <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

       <Name>System-net_4_x</Name>

     </ProjectReference>

-    <ProjectReference Include="../Mono.Cecil/Mono.Cecil-net_4_x.csproj">

-      <Project>{2C0D558F-0B38-4691-967E-A910A1B995C1}</Project>

-      <Name>Mono.Cecil-net_4_x</Name>

-    </ProjectReference>

+    <Reference Include="./../../class/lib/net_4_x/Mono.Cecil.dll">

+      <SpecificVersion>False</SpecificVersion>

+      <HintPath>./../../class/lib/net_4_x/Mono.Cecil.dll</HintPath>

+      <Private>False</Private>

+    </Reference>

   </ItemGroup>

   <ItemGroup>

     <Folder Include="Properties\" />

diff --git a/mcs/class/Mono.CodeContracts/Mono.CodeContracts-net_4_x.csproj b/mcs/class/Mono.CodeContracts/Mono.CodeContracts-net_4_x.csproj
index e2169fc9aeb..b5b78a1ccd7 100644
--- a/mcs/class/Mono.CodeContracts/Mono.CodeContracts-net_4_x.csproj
+++ b/mcs/class/Mono.CodeContracts/Mono.CodeContracts-net_4_x.csproj
@@ -7,7 +7,7 @@
     <SchemaVersion>2.0</SchemaVersion>

     <ProjectGuid>{9BE8D62B-471D-4538-8287-691B4ECE3209}</ProjectGuid>

     <OutputType>Library</OutputType>

-    <NoWarn>1699</NoWarn>

+    <NoWarn>1699,618</NoWarn>

     <OutputPath>./../../class/lib/net_4_x</OutputPath>

     <IntermediateOutputPath>obj-net_4_x</IntermediateOutputPath>

     <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

@@ -26,17 +26,17 @@
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

     <DebugSymbols>true</DebugSymbols>

     <DebugType>full</DebugType>

-    <NoWarn>1699</NoWarn>

+    <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

     <DebugType>pdbonly</DebugType>

-    <NoWarn>1699</NoWarn>

+    <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -459,10 +459,11 @@
       <Project>{359142A1-D80F-401E-AA64-7167C9317649}</Project>

       <Name>System.Core-net_4_x</Name>

     </ProjectReference>

-    <ProjectReference Include="../Mono.Cecil/Mono.Cecil-net_4_x.csproj">

-      <Project>{2C0D558F-0B38-4691-967E-A910A1B995C1}</Project>

-      <Name>Mono.Cecil-net_4_x</Name>

-    </ProjectReference>

+    <Reference Include="./../../class/lib/net_4_x/Mono.Cecil.dll">

+      <SpecificVersion>False</SpecificVersion>

+      <HintPath>./../../class/lib/net_4_x/Mono.Cecil.dll</HintPath>

+      <Private>False</Private>

+    </Reference>

     <ProjectReference Include="../Mono.Cecil.Mdb/Mono.Cecil.Mdb-net_4_x.csproj">

       <Project>{CF14D34A-F69B-47FB-A99C-D25C77198F30}</Project>

       <Name>Mono.Cecil.Mdb-net_4_x</Name>

diff --git a/mcs/class/Mono.CompilerServices.SymbolWriter/Mono.CompilerServices.SymbolWriter-net_4_x.csproj b/mcs/class/Mono.CompilerServices.SymbolWriter/Mono.CompilerServices.SymbolWriter-net_4_x.csproj
index 0b59fa3d3c9..bf1742c2c89 100644
--- a/mcs/class/Mono.CompilerServices.SymbolWriter/Mono.CompilerServices.SymbolWriter-net_4_x.csproj
+++ b/mcs/class/Mono.CompilerServices.SymbolWriter/Mono.CompilerServices.SymbolWriter-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Data.Sqlite/Mono.Data.Sqlite-net_4_x.csproj b/mcs/class/Mono.Data.Sqlite/Mono.Data.Sqlite-net_4_x.csproj
index 7a1ee0ced12..ecfde0841c7 100644
--- a/mcs/class/Mono.Data.Sqlite/Mono.Data.Sqlite-net_4_x.csproj
+++ b/mcs/class/Mono.Data.Sqlite/Mono.Data.Sqlite-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;SQLITE_STANDARD</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;SQLITE_STANDARD</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;SQLITE_STANDARD</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;SQLITE_STANDARD</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Data.Tds/Mono.Data.Tds-net_4_x.csproj b/mcs/class/Mono.Data.Tds/Mono.Data.Tds-net_4_x.csproj
index a1b59026c1d..31fa4f21023 100644
--- a/mcs/class/Mono.Data.Tds/Mono.Data.Tds-net_4_x.csproj
+++ b/mcs/class/Mono.Data.Tds/Mono.Data.Tds-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft-net_4_x.csproj b/mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft-net_4_x.csproj
index 51d78f17c2f..5666c1f9921 100644
--- a/mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft-net_4_x.csproj
+++ b/mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft-net_4_x.csproj
@@ -33,7 +33,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_DATACONVERTER_STATIC_METHODS</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;MONO_DATACONVERTER_STATIC_METHODS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -41,7 +41,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_DATACONVERTER_STATIC_METHODS</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;MONO_DATACONVERTER_STATIC_METHODS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -91,6 +91,7 @@
     <Compile Include="Mono.Debugger.Soft\InvocationException.cs" />

     <Compile Include="Mono.Debugger.Soft\InvokeOptions.cs" />

     <Compile Include="Mono.Debugger.Soft\ITargetProcess.cs" />

+    <Compile Include="Mono.Debugger.Soft\LocalScope.cs" />

     <Compile Include="Mono.Debugger.Soft\LocalVariable.cs" />

     <Compile Include="Mono.Debugger.Soft\Location.cs" />

     <Compile Include="Mono.Debugger.Soft\MethodBodyMirror.cs" />

@@ -159,10 +160,11 @@
       <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

       <Name>System-net_4_x</Name>

     </ProjectReference>

-    <ProjectReference Include="../Mono.Cecil/Mono.Cecil-net_4_x.csproj">

-      <Project>{2C0D558F-0B38-4691-967E-A910A1B995C1}</Project>

-      <Name>Mono.Cecil-net_4_x</Name>

-    </ProjectReference>

+    <Reference Include="./../../class/lib/net_4_x/Mono.Cecil.dll">

+      <SpecificVersion>False</SpecificVersion>

+      <HintPath>./../../class/lib/net_4_x/Mono.Cecil.dll</HintPath>

+      <Private>False</Private>

+    </Reference>

     <ProjectReference Include="../System.Core/System.Core-net_4_x.csproj">

       <Project>{359142A1-D80F-401E-AA64-7167C9317649}</Project>

       <Name>System.Core-net_4_x</Name>

diff --git a/mcs/class/Mono.Http/Mono.Http-net_4_x.csproj b/mcs/class/Mono.Http/Mono.Http-net_4_x.csproj
index 781affa962a..2ca9b10f3ba 100644
--- a/mcs/class/Mono.Http/Mono.Http-net_4_x.csproj
+++ b/mcs/class/Mono.Http/Mono.Http-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Management/Mono.Management-net_4_x.csproj b/mcs/class/Mono.Management/Mono.Management-net_4_x.csproj
index 9aa0a5dffaf..6769331369f 100644
--- a/mcs/class/Mono.Management/Mono.Management-net_4_x.csproj
+++ b/mcs/class/Mono.Management/Mono.Management-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Messaging.RabbitMQ/Mono.Messaging.RabbitMQ-net_4_x.csproj b/mcs/class/Mono.Messaging.RabbitMQ/Mono.Messaging.RabbitMQ-net_4_x.csproj
index 40771592cda..07983e35f21 100644
--- a/mcs/class/Mono.Messaging.RabbitMQ/Mono.Messaging.RabbitMQ-net_4_x.csproj
+++ b/mcs/class/Mono.Messaging.RabbitMQ/Mono.Messaging.RabbitMQ-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Messaging/Mono.Messaging-net_4_x.csproj b/mcs/class/Mono.Messaging/Mono.Messaging-net_4_x.csproj
index 8b83f632390..443dbcc2ab0 100644
--- a/mcs/class/Mono.Messaging/Mono.Messaging-net_4_x.csproj
+++ b/mcs/class/Mono.Messaging/Mono.Messaging-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Options/Mono.Options-net_4_x.csproj b/mcs/class/Mono.Options/Mono.Options-net_4_x.csproj
index d8f8685ff49..46188abafc6 100644
--- a/mcs/class/Mono.Options/Mono.Options-net_4_x.csproj
+++ b/mcs/class/Mono.Options/Mono.Options-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Parallel/Mono.Parallel-net_4_x.csproj b/mcs/class/Mono.Parallel/Mono.Parallel-net_4_x.csproj
index f5de89dfdd4..2ae4c0eb1f2 100644
--- a/mcs/class/Mono.Parallel/Mono.Parallel-net_4_x.csproj
+++ b/mcs/class/Mono.Parallel/Mono.Parallel-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;INSIDE_MONO_PARALLEL</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;INSIDE_MONO_PARALLEL</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;INSIDE_MONO_PARALLEL</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;INSIDE_MONO_PARALLEL</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Posix/Mono.Posix-net_4_x.csproj b/mcs/class/Mono.Posix/Mono.Posix-net_4_x.csproj
index 51e6db7e1d8..cb7699e774f 100644
--- a/mcs/class/Mono.Posix/Mono.Posix-net_4_x.csproj
+++ b/mcs/class/Mono.Posix/Mono.Posix-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618,612</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618,612</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Security.Win32/Mono.Security.Win32-net_4_x.csproj b/mcs/class/Mono.Security.Win32/Mono.Security.Win32-net_4_x.csproj
index 6eb3f05da22..aa57e2b27bc 100644
--- a/mcs/class/Mono.Security.Win32/Mono.Security.Win32-net_4_x.csproj
+++ b/mcs/class/Mono.Security.Win32/Mono.Security.Win32-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Security/Mono.Security-net_4_x.csproj b/mcs/class/Mono.Security/Mono.Security-net_4_x.csproj
index 70678d2f0ca..1be4163a2c4 100644
--- a/mcs/class/Mono.Security/Mono.Security-net_4_x.csproj
+++ b/mcs/class/Mono.Security/Mono.Security-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1030,3009</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1030,3009</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Simd/Mono.Simd-net_4_x.csproj b/mcs/class/Mono.Simd/Mono.Simd-net_4_x.csproj
index 6c2e89d1880..6d6b92bee92 100644
--- a/mcs/class/Mono.Simd/Mono.Simd-net_4_x.csproj
+++ b/mcs/class/Mono.Simd/Mono.Simd-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.Tasklets/Mono.Tasklets-net_4_x.csproj b/mcs/class/Mono.Tasklets/Mono.Tasklets-net_4_x.csproj
index 25491427421..1bce2b5be37 100644
--- a/mcs/class/Mono.Tasklets/Mono.Tasklets-net_4_x.csproj
+++ b/mcs/class/Mono.Tasklets/Mono.Tasklets-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.WebBrowser/Mono.WebBrowser-net_4_x.csproj b/mcs/class/Mono.WebBrowser/Mono.WebBrowser-net_4_x.csproj
index 7184cb7c2e5..776ef028fc4 100644
--- a/mcs/class/Mono.WebBrowser/Mono.WebBrowser-net_4_x.csproj
+++ b/mcs/class/Mono.WebBrowser/Mono.WebBrowser-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Mono.XBuild.Tasks/Mono.XBuild.Tasks-net_4_x.csproj b/mcs/class/Mono.XBuild.Tasks/Mono.XBuild.Tasks-net_4_x.csproj
index 88bcc5bf2e1..6137f29f183 100644
--- a/mcs/class/Mono.XBuild.Tasks/Mono.XBuild.Tasks-net_4_x.csproj
+++ b/mcs/class/Mono.XBuild.Tasks/Mono.XBuild.Tasks-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/Novell.Directory.Ldap/Novell.Directory.Ldap-net_4_x.csproj b/mcs/class/Novell.Directory.Ldap/Novell.Directory.Ldap-net_4_x.csproj
index 90e5b13419f..c9edbef3e54 100644
--- a/mcs/class/Novell.Directory.Ldap/Novell.Directory.Ldap-net_4_x.csproj
+++ b/mcs/class/Novell.Directory.Ldap/Novell.Directory.Ldap-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,612</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,612</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/PEAPI/PEAPI-net_4_x.csproj b/mcs/class/PEAPI/PEAPI-net_4_x.csproj
index dd4b88112dd..e51c82af0c2 100644
--- a/mcs/class/PEAPI/PEAPI-net_4_x.csproj
+++ b/mcs/class/PEAPI/PEAPI-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,414,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,414,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/RabbitMQ.Client/src/apigen/RabbitMQ.Client.Apigen-net_4_x.csproj b/mcs/class/RabbitMQ.Client/src/apigen/RabbitMQ.Client.Apigen-net_4_x.csproj
index 21fe03503f4..aee8ec025ae 100644
--- a/mcs/class/RabbitMQ.Client/src/apigen/RabbitMQ.Client.Apigen-net_4_x.csproj
+++ b/mcs/class/RabbitMQ.Client/src/apigen/RabbitMQ.Client.Apigen-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/RabbitMQ.Client/src/client/RabbitMQ.Client-net_4_x.csproj b/mcs/class/RabbitMQ.Client/src/client/RabbitMQ.Client-net_4_x.csproj
index e062f548163..ce10fe9758b 100644
--- a/mcs/class/RabbitMQ.Client/src/client/RabbitMQ.Client-net_4_x.csproj
+++ b/mcs/class/RabbitMQ.Client/src/client/RabbitMQ.Client-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/SMDiagnostics/SMDiagnostics-net_4_x.csproj b/mcs/class/SMDiagnostics/SMDiagnostics-net_4_x.csproj
index d20c1ba9eb9..b803fffae2b 100644
--- a/mcs/class/SMDiagnostics/SMDiagnostics-net_4_x.csproj
+++ b/mcs/class/SMDiagnostics/SMDiagnostics-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.ComponentModel.Composition.4.5/System.ComponentModel.Composition-net_4_x.csproj b/mcs/class/System.ComponentModel.Composition.4.5/System.ComponentModel.Composition-net_4_x.csproj
index 598f507463c..6ddc1e2e4fd 100644
--- a/mcs/class/System.ComponentModel.Composition.4.5/System.ComponentModel.Composition-net_4_x.csproj
+++ b/mcs/class/System.ComponentModel.Composition.4.5/System.ComponentModel.Composition-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,219,414</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CLR40;USE_ECMA_KEY;FEATURE_REFLECTIONCONTEXT;FEATURE_REFLECTIONFILEIO;FEATURE_SERIALIZATION;FEATURE_SLIMLOCK</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;CLR40;USE_ECMA_KEY;FEATURE_REFLECTIONCONTEXT;FEATURE_REFLECTIONFILEIO;FEATURE_SERIALIZATION;FEATURE_SLIMLOCK</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,219,414</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CLR40;USE_ECMA_KEY;FEATURE_REFLECTIONCONTEXT;FEATURE_REFLECTIONFILEIO;FEATURE_SERIALIZATION;FEATURE_SLIMLOCK</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;CLR40;USE_ECMA_KEY;FEATURE_REFLECTIONCONTEXT;FEATURE_REFLECTIONFILEIO;FEATURE_SERIALIZATION;FEATURE_SLIMLOCK</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations-net_4_x.csproj b/mcs/class/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations-net_4_x.csproj
index 69eacf9c620..4cfe283b413 100644
--- a/mcs/class/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations-net_4_x.csproj
+++ b/mcs/class/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,414</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,414</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Configuration.Install/System.Configuration.Install-net_4_x.csproj b/mcs/class/System.Configuration.Install/System.Configuration.Install-net_4_x.csproj
index d830e4f8039..9b8a501002a 100644
--- a/mcs/class/System.Configuration.Install/System.Configuration.Install-net_4_x.csproj
+++ b/mcs/class/System.Configuration.Install/System.Configuration.Install-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Configuration/System.Configuration-net_4_x.csproj b/mcs/class/System.Configuration/System.Configuration-net_4_x.csproj
index 61bfe7fa885..3953b0e110d 100644
--- a/mcs/class/System.Configuration/System.Configuration-net_4_x.csproj
+++ b/mcs/class/System.Configuration/System.Configuration-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Core/System.Core-net_4_x.csproj b/mcs/class/System.Core/System.Core-net_4_x.csproj
index 2f65fc4c3be..65bb1294281 100644
--- a/mcs/class/System.Core/System.Core-net_4_x.csproj
+++ b/mcs/class/System.Core/System.Core-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1720</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;FEATURE_PAL;PFX_LEGACY_3_5;FEATURE_NETCORE;INSIDE_SYSCORE;LIBC;NET_3_5;FEATURE_CORE_DLR;FEATURE_REFEMIT;FEATURE_PDBEMIT</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_PAL;PFX_LEGACY_3_5;FEATURE_NETCORE;INSIDE_SYSCORE;LIBC;NET_3_5;FEATURE_CORE_DLR;FEATURE_REFEMIT;FEATURE_PDBEMIT</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1720</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;FEATURE_PAL;PFX_LEGACY_3_5;FEATURE_NETCORE;INSIDE_SYSCORE;LIBC;NET_3_5;FEATURE_CORE_DLR;FEATURE_REFEMIT;FEATURE_PDBEMIT</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_PAL;PFX_LEGACY_3_5;FEATURE_NETCORE;INSIDE_SYSCORE;LIBC;NET_3_5;FEATURE_CORE_DLR;FEATURE_REFEMIT;FEATURE_PDBEMIT</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -48,6 +48,7 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\build\common\MonoTODOAttribute.cs" />

     <Compile Include="..\..\build\common\SR.cs" />

     <Compile Include="..\dlr\Runtime\Microsoft.Scripting.Core\Actions\BinaryOperationBinder.cs" />

     <Compile Include="..\dlr\Runtime\Microsoft.Scripting.Core\Actions\BindingRestrictions.cs" />

@@ -326,11 +327,22 @@
     <Compile Include="..\referencesource\System.Core\System\Runtime\CompilerServices\ExecutionScope.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\Aes.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\AesManaged.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\BCryptNative.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngAlgorithm.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngAlgorithmGroup.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngKey.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngKeyBlobFormat.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngKeyCreationParameters.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngProperty.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngProvider.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngUIPolicy.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECDiffieHellman.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECDiffieHellmanPublicKey.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECDsa.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECDsaCng.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECKeyXmlFormat.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\NCryptNative.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\RsaCng.cs" />

     <Compile Include="..\referencesource\System.Core\System\threading\ReaderWriterLockSlim\LockRecursionException.cs" />

     <Compile Include="..\referencesource\System.Core\System\threading\ReaderWriterLockSlim\ReaderWriterLockSlim.cs" />

     <Compile Include="..\referencesource\System.Core\System\threading\Tasks\TaskExtensions.cs" />

@@ -339,6 +351,10 @@
     <Compile Include="Assembly\AssemblyInfo.cs" />

     <Compile Include="Microsoft.Win32.SafeHandles\SafeMemoryMappedFileHandle.cs" />

     <Compile Include="Microsoft.Win32.SafeHandles\SafeMemoryMappedViewHandle.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeNCryptHandle.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeNCryptKeyHandle.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeNCryptProviderHandle.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeNCryptSecretHandle.cs" />

     <Compile Include="Microsoft.Win32.SafeHandles\SafePipeHandle.cs" />

     <Compile Include="ReferenceSources\Error.cs" />

     <Compile Include="ReferenceSources\SR.cs" />

@@ -362,10 +378,15 @@
     <Compile Include="System.IO.Pipes\PipeTransmissionMode.cs" />

     <Compile Include="System.IO.Pipes\PipeUnix.cs" />

     <Compile Include="System.IO.Pipes\PipeWin32.cs" />

+    <Compile Include="System.Security.Cryptography.X509Certificates\ECDsaCertificateExtensions.cs" />

+    <Compile Include="System.Security.Cryptography.X509Certificates\RSACertificateExtensions.cs" />

+    <Compile Include="System.Security.Cryptography\AesCng.cs" />

     <Compile Include="System.Security.Cryptography\AesCryptoServiceProvider.cs" />

     <Compile Include="System.Security.Cryptography\AesTransform.cs" />

-    <Compile Include="System.Security.Cryptography\CngAlgorithm.cs" />

-    <Compile Include="System.Security.Cryptography\CngAlgorithmGroup.cs" />

+    <Compile Include="System.Security.Cryptography\ECCurve.cs" />

+    <Compile Include="System.Security.Cryptography\ECParameters.cs" />

+    <Compile Include="System.Security.Cryptography\ECPoint.cs" />

+    <Compile Include="System.Security.Cryptography\IncrementalHash.cs" />

     <Compile Include="System.Security.Cryptography\MD5Cng.cs" />

     <Compile Include="System.Security.Cryptography\SHA1Cng.cs" />

     <Compile Include="System.Security.Cryptography\SHA256Cng.cs" />

@@ -374,6 +395,7 @@
     <Compile Include="System.Security.Cryptography\SHA384CryptoServiceProvider.cs" />

     <Compile Include="System.Security.Cryptography\SHA512Cng.cs" />

     <Compile Include="System.Security.Cryptography\SHA512CryptoServiceProvider.cs" />

+    <Compile Include="System.Security.Cryptography\TripleDESCng.cs" />

     <Compile Include="System\Util.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/System.Core/System.Core-plaincore-net_4_x.csproj b/mcs/class/System.Core/System.Core-plaincore-net_4_x.csproj
index 110a22b1b29..9668c39f9fb 100644
--- a/mcs/class/System.Core/System.Core-plaincore-net_4_x.csproj
+++ b/mcs/class/System.Core/System.Core-plaincore-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1720</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;FEATURE_PAL;PFX_LEGACY_3_5;FEATURE_NETCORE;INSIDE_SYSCORE;LIBC;NET_3_5;FEATURE_CORE_DLR;FEATURE_REFEMIT;FEATURE_PDBEMIT</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_PAL;PFX_LEGACY_3_5;FEATURE_NETCORE;INSIDE_SYSCORE;LIBC;NET_3_5;FEATURE_CORE_DLR;FEATURE_REFEMIT;FEATURE_PDBEMIT</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1720</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;FEATURE_PAL;PFX_LEGACY_3_5;FEATURE_NETCORE;INSIDE_SYSCORE;LIBC;NET_3_5;FEATURE_CORE_DLR;FEATURE_REFEMIT;FEATURE_PDBEMIT</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_PAL;PFX_LEGACY_3_5;FEATURE_NETCORE;INSIDE_SYSCORE;LIBC;NET_3_5;FEATURE_CORE_DLR;FEATURE_REFEMIT;FEATURE_PDBEMIT</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -48,6 +48,7 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\build\common\MonoTODOAttribute.cs" />

     <Compile Include="..\..\build\common\SR.cs" />

     <Compile Include="..\dlr\Runtime\Microsoft.Scripting.Core\Actions\BinaryOperationBinder.cs" />

     <Compile Include="..\dlr\Runtime\Microsoft.Scripting.Core\Actions\BindingRestrictions.cs" />

@@ -326,11 +327,22 @@
     <Compile Include="..\referencesource\System.Core\System\Runtime\CompilerServices\ExecutionScope.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\Aes.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\AesManaged.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\BCryptNative.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngAlgorithm.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngAlgorithmGroup.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngKey.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngKeyBlobFormat.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngKeyCreationParameters.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngProperty.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngProvider.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\CngUIPolicy.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECDiffieHellman.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECDiffieHellmanPublicKey.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECDsa.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECDsaCng.cs" />

     <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\ECKeyXmlFormat.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\NCryptNative.cs" />

+    <Compile Include="..\referencesource\System.Core\System\Security\Cryptography\RsaCng.cs" />

     <Compile Include="..\referencesource\System.Core\System\threading\ReaderWriterLockSlim\LockRecursionException.cs" />

     <Compile Include="..\referencesource\System.Core\System\threading\ReaderWriterLockSlim\ReaderWriterLockSlim.cs" />

     <Compile Include="..\referencesource\System.Core\System\threading\Tasks\TaskExtensions.cs" />

@@ -339,6 +351,10 @@
     <Compile Include="Assembly\AssemblyInfo.cs" />

     <Compile Include="Microsoft.Win32.SafeHandles\SafeMemoryMappedFileHandle.cs" />

     <Compile Include="Microsoft.Win32.SafeHandles\SafeMemoryMappedViewHandle.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeNCryptHandle.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeNCryptKeyHandle.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeNCryptProviderHandle.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeNCryptSecretHandle.cs" />

     <Compile Include="Microsoft.Win32.SafeHandles\SafePipeHandle.cs" />

     <Compile Include="ReferenceSources\Error.cs" />

     <Compile Include="ReferenceSources\SR.cs" />

@@ -362,10 +378,15 @@
     <Compile Include="System.IO.Pipes\PipeTransmissionMode.cs" />

     <Compile Include="System.IO.Pipes\PipeUnix.cs" />

     <Compile Include="System.IO.Pipes\PipeWin32.cs" />

+    <Compile Include="System.Security.Cryptography.X509Certificates\ECDsaCertificateExtensions.cs" />

+    <Compile Include="System.Security.Cryptography.X509Certificates\RSACertificateExtensions.cs" />

+    <Compile Include="System.Security.Cryptography\AesCng.cs" />

     <Compile Include="System.Security.Cryptography\AesCryptoServiceProvider.cs" />

     <Compile Include="System.Security.Cryptography\AesTransform.cs" />

-    <Compile Include="System.Security.Cryptography\CngAlgorithm.cs" />

-    <Compile Include="System.Security.Cryptography\CngAlgorithmGroup.cs" />

+    <Compile Include="System.Security.Cryptography\ECCurve.cs" />

+    <Compile Include="System.Security.Cryptography\ECParameters.cs" />

+    <Compile Include="System.Security.Cryptography\ECPoint.cs" />

+    <Compile Include="System.Security.Cryptography\IncrementalHash.cs" />

     <Compile Include="System.Security.Cryptography\MD5Cng.cs" />

     <Compile Include="System.Security.Cryptography\SHA1Cng.cs" />

     <Compile Include="System.Security.Cryptography\SHA256Cng.cs" />

@@ -374,6 +395,7 @@
     <Compile Include="System.Security.Cryptography\SHA384CryptoServiceProvider.cs" />

     <Compile Include="System.Security.Cryptography\SHA512Cng.cs" />

     <Compile Include="System.Security.Cryptography\SHA512CryptoServiceProvider.cs" />

+    <Compile Include="System.Security.Cryptography\TripleDESCng.cs" />

     <Compile Include="System\Util.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/System.Data.DataSetExtensions/System.Data.DataSetExtensions-net_4_x.csproj b/mcs/class/System.Data.DataSetExtensions/System.Data.DataSetExtensions-net_4_x.csproj
index 8d845d576bf..d6958bca3fa 100644
--- a/mcs/class/System.Data.DataSetExtensions/System.Data.DataSetExtensions-net_4_x.csproj
+++ b/mcs/class/System.Data.DataSetExtensions/System.Data.DataSetExtensions-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Data.Entity/System.Data.Entity-net_4_x.csproj b/mcs/class/System.Data.Entity/System.Data.Entity-net_4_x.csproj
index 25275651f16..dc165127bd8 100644
--- a/mcs/class/System.Data.Entity/System.Data.Entity-net_4_x.csproj
+++ b/mcs/class/System.Data.Entity/System.Data.Entity-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Data.Linq/System.Data.Linq-net_4_x.csproj b/mcs/class/System.Data.Linq/System.Data.Linq-net_4_x.csproj
index 02e0b4aba48..c0eb66afad1 100644
--- a/mcs/class/System.Data.Linq/System.Data.Linq-net_4_x.csproj
+++ b/mcs/class/System.Data.Linq/System.Data.Linq-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_STRICT;MONO_DEPLOY</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;MONO_STRICT;MONO_DEPLOY</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_STRICT;MONO_DEPLOY</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;MONO_STRICT;MONO_DEPLOY</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Data.OracleClient/System.Data.OracleClient-net_4_x.csproj b/mcs/class/System.Data.OracleClient/System.Data.OracleClient-net_4_x.csproj
index e569ce44aad..f89fb0af117 100644
--- a/mcs/class/System.Data.OracleClient/System.Data.OracleClient-net_4_x.csproj
+++ b/mcs/class/System.Data.OracleClient/System.Data.OracleClient-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Data.Services.Client/System.Data.Services.Client-net_4_x.csproj b/mcs/class/System.Data.Services.Client/System.Data.Services.Client-net_4_x.csproj
index e5d64222fa8..a9e20552535 100644
--- a/mcs/class/System.Data.Services.Client/System.Data.Services.Client-net_4_x.csproj
+++ b/mcs/class/System.Data.Services.Client/System.Data.Services.Client-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Data.Services/System.Data.Services-net_4_x.csproj b/mcs/class/System.Data.Services/System.Data.Services-net_4_x.csproj
index 6a4ef89e6c8..a947e731770 100644
--- a/mcs/class/System.Data.Services/System.Data.Services-net_4_x.csproj
+++ b/mcs/class/System.Data.Services/System.Data.Services-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Data/System.Data-net_4_x.csproj b/mcs/class/System.Data/System.Data-net_4_x.csproj
index 552ec452530..42dfed2e6c2 100644
--- a/mcs/class/System.Data/System.Data-net_4_x.csproj
+++ b/mcs/class/System.Data/System.Data-net_4_x.csproj
@@ -7,7 +7,7 @@
     <SchemaVersion>2.0</SchemaVersion>

     <ProjectGuid>{EC439BB8-FFED-4A32-A05D-2FA3A70CAD64}</ProjectGuid>

     <OutputType>Library</OutputType>

-    <NoWarn>1699,169,219,414,649</NoWarn>

+    <NoWarn>1699,219,414,649</NoWarn>

     <OutputPath>./../../class/lib/net_4_x</OutputPath>

     <IntermediateOutputPath>obj-net_4_x</IntermediateOutputPath>

     <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

@@ -26,17 +26,17 @@
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

     <DebugSymbols>true</DebugSymbols>

     <DebugType>full</DebugType>

-    <NoWarn>1699,169,219,414,649</NoWarn>

+    <NoWarn>1699,219,414,649</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;PLATFORM_UNIX;USEOFFSET;MONO_PARTIAL_DATA_IMPORT</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;PLATFORM_UNIX;USEOFFSET;MONO_PARTIAL_DATA_IMPORT</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

     <DebugType>pdbonly</DebugType>

-    <NoWarn>1699,169,219,414,649</NoWarn>

+    <NoWarn>1699,219,414,649</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;PLATFORM_UNIX;USEOFFSET;MONO_PARTIAL_DATA_IMPORT</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;PLATFORM_UNIX;USEOFFSET;MONO_PARTIAL_DATA_IMPORT</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -442,6 +442,7 @@
     <Compile Include="Microsoft.SqlServer.Server\SqlDataRecord.cs" />

     <Compile Include="Microsoft.SqlServer.Server\SqlMetaData.cs" />

     <Compile Include="ReferenceSources\NativeOledbWrapper.cs" />

+    <Compile Include="ReferenceSources\PoolBlockingPeriod.cs" />

     <Compile Include="ReferenceSources\Res.cs" />

     <Compile Include="ReferenceSources\Res.missing.cs" />

     <Compile Include="ReferenceSources\ResCategoryAttribute.cs" />

diff --git a/mcs/class/System.Deployment/System.Deployment-net_4_x.csproj b/mcs/class/System.Deployment/System.Deployment-net_4_x.csproj
index bd40ae2f3a7..d06374c6787 100644
--- a/mcs/class/System.Deployment/System.Deployment-net_4_x.csproj
+++ b/mcs/class/System.Deployment/System.Deployment-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Design/System.Design-net_4_x.csproj b/mcs/class/System.Design/System.Design-net_4_x.csproj
index 4750c28d29f..ce54f69b32a 100644
--- a/mcs/class/System.Design/System.Design-net_4_x.csproj
+++ b/mcs/class/System.Design/System.Design-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Design/System.Design-plaindesign-net_4_x.csproj b/mcs/class/System.Design/System.Design-plaindesign-net_4_x.csproj
index 1248aef2a74..b059968dac2 100644
--- a/mcs/class/System.Design/System.Design-plaindesign-net_4_x.csproj
+++ b/mcs/class/System.Design/System.Design-plaindesign-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.DirectoryServices.Protocols/System.DirectoryServices.Protocols-net_4_x.csproj b/mcs/class/System.DirectoryServices.Protocols/System.DirectoryServices.Protocols-net_4_x.csproj
index f00cf92ef4e..216ae2b7df3 100644
--- a/mcs/class/System.DirectoryServices.Protocols/System.DirectoryServices.Protocols-net_4_x.csproj
+++ b/mcs/class/System.DirectoryServices.Protocols/System.DirectoryServices.Protocols-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.DirectoryServices/System.DirectoryServices-net_4_x.csproj b/mcs/class/System.DirectoryServices/System.DirectoryServices-net_4_x.csproj
index 31cfc603485..97dc20d62a9 100644
--- a/mcs/class/System.DirectoryServices/System.DirectoryServices-net_4_x.csproj
+++ b/mcs/class/System.DirectoryServices/System.DirectoryServices-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Drawing.Design/System.Drawing.Design-net_4_x.csproj b/mcs/class/System.Drawing.Design/System.Drawing.Design-net_4_x.csproj
index cd524385006..37222ca58fa 100644
--- a/mcs/class/System.Drawing.Design/System.Drawing.Design-net_4_x.csproj
+++ b/mcs/class/System.Drawing.Design/System.Drawing.Design-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Drawing/System.Drawing-net_4_x.csproj b/mcs/class/System.Drawing/System.Drawing-net_4_x.csproj
index 00f54219c78..938e2b01a51 100644
--- a/mcs/class/System.Drawing/System.Drawing-net_4_x.csproj
+++ b/mcs/class/System.Drawing/System.Drawing-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_TYPECONVERTER</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_TYPECONVERTER</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Dynamic/System.Dynamic-net_4_x.csproj b/mcs/class/System.Dynamic/System.Dynamic-net_4_x.csproj
index 788104cabe5..eaacbe91d7c 100644
--- a/mcs/class/System.Dynamic/System.Dynamic-net_4_x.csproj
+++ b/mcs/class/System.Dynamic/System.Dynamic-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,414,169</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CODEPLEX_40</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;CODEPLEX_40</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,414,169</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CODEPLEX_40</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;CODEPLEX_40</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.EnterpriseServices/System.EnterpriseServices-net_4_x.csproj b/mcs/class/System.EnterpriseServices/System.EnterpriseServices-net_4_x.csproj
index d0a7c52ddb6..7cc3ea8d445 100644
--- a/mcs/class/System.EnterpriseServices/System.EnterpriseServices-net_4_x.csproj
+++ b/mcs/class/System.EnterpriseServices/System.EnterpriseServices-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,168,162</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,168,162</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.IO.Compression.FileSystem/System.IO.Compression.FileSystem-net_4_x.csproj b/mcs/class/System.IO.Compression.FileSystem/System.IO.Compression.FileSystem-net_4_x.csproj
index 63bf1dbfbf1..f21ba16949c 100644
--- a/mcs/class/System.IO.Compression.FileSystem/System.IO.Compression.FileSystem-net_4_x.csproj
+++ b/mcs/class/System.IO.Compression.FileSystem/System.IO.Compression.FileSystem-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.IO.Compression/System.IO.Compression-net_4_x.csproj b/mcs/class/System.IO.Compression/System.IO.Compression-net_4_x.csproj
index 48529c618dd..2b181148459 100644
--- a/mcs/class/System.IO.Compression/System.IO.Compression-net_4_x.csproj
+++ b/mcs/class/System.IO.Compression/System.IO.Compression-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.IdentityModel.Selectors/System.IdentityModel.Selectors-net_4_x.csproj b/mcs/class/System.IdentityModel.Selectors/System.IdentityModel.Selectors-net_4_x.csproj
index e834a58af15..390ff284a07 100644
--- a/mcs/class/System.IdentityModel.Selectors/System.IdentityModel.Selectors-net_4_x.csproj
+++ b/mcs/class/System.IdentityModel.Selectors/System.IdentityModel.Selectors-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_0</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_0</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.IdentityModel/System.IdentityModel-net_4_x.csproj b/mcs/class/System.IdentityModel/System.IdentityModel-net_4_x.csproj
index ea349ebcc43..a467a2793dd 100644
--- a/mcs/class/System.IdentityModel/System.IdentityModel-net_4_x.csproj
+++ b/mcs/class/System.IdentityModel/System.IdentityModel-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_0</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_0</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -178,6 +178,12 @@
     <Compile Include="System.IdentityModel\OpenObject.cs" />

     <Compile Include="System.IdentityModel\SignatureVerificationFailedException.cs" />

     <Compile Include="System.Security.Claims\AuthenticationTypes.cs" />

+    <Compile Include="System.ServiceModel.Security.Tokens\BinarySecretSecurityToken.cs" />

+    <Compile Include="System.ServiceModel.Security.Tokens\InternalEncryptedKeyIdentifierClause.cs" />

+    <Compile Include="System.ServiceModel.Security.Tokens\WrappedKeySecurityToken.cs" />

+    <Compile Include="System.ServiceModel.Security\BinarySecretKeyIdentifierClause.cs" />

+    <Compile Include="System.ServiceModel.Security\KeyNameIdentifierClause.cs" />

+    <Compile Include="System.ServiceModel.Security\SecurityContextKeyIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security\X509CertificateValidationMode.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

@@ -217,10 +223,6 @@
       <Project>{3ED36717-A9D1-4289-8949-9B7F39766DEB}</Project>

       <Name>System.Security-net_4_x</Name>

     </ProjectReference>

-    <ProjectReference Include="../System.Configuration/System.Configuration-net_4_x.csproj">

-      <Project>{D5CDC09C-F19A-4811-A6C8-70F51CBFB644}</Project>

-      <Name>System.Configuration-net_4_x</Name>

-    </ProjectReference>

     <ProjectReference Include="../Mono.Security/Mono.Security-net_4_x.csproj">

       <Project>{42D59DE7-586F-4ACF-BDD5-E7869E39E3EF}</Project>

       <Name>Mono.Security-net_4_x</Name>

@@ -229,6 +231,10 @@
       <Project>{D845AD9D-3CCB-49CB-9543-028678E94938}</Project>

       <Name>System.Runtime.Serialization-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../System.Configuration/System.Configuration-net_4_x.csproj">

+      <Project>{D5CDC09C-F19A-4811-A6C8-70F51CBFB644}</Project>

+      <Name>System.Configuration-net_4_x</Name>

+    </ProjectReference>

     <ProjectReference Include="../System.Web/System.Web-net_4_x.csproj">

       <Project>{9DB806CB-B828-49B7-BAE2-2E52402CB4DC}</Project>

       <Name>System.Web-net_4_x</Name>

diff --git a/mcs/class/System.Json.Microsoft/System.Json.Microsoft-net_4_x.csproj b/mcs/class/System.Json.Microsoft/System.Json.Microsoft-net_4_x.csproj
index 136d3cc0f0f..1756a091db0 100644
--- a/mcs/class/System.Json.Microsoft/System.Json.Microsoft-net_4_x.csproj
+++ b/mcs/class/System.Json.Microsoft/System.Json.Microsoft-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC;FEATURE_DYNAMIC</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC;FEATURE_DYNAMIC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC;FEATURE_DYNAMIC</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC;FEATURE_DYNAMIC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Json/System.Json-net_4_x.csproj b/mcs/class/System.Json/System.Json-net_4_x.csproj
index 5a5dadfa168..ebe0749a1be 100644
--- a/mcs/class/System.Json/System.Json-net_4_x.csproj
+++ b/mcs/class/System.Json/System.Json-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Management/System.Management-net_4_x.csproj b/mcs/class/System.Management/System.Management-net_4_x.csproj
index 7d9b5c40172..4e6ea46d7d4 100644
--- a/mcs/class/System.Management/System.Management-net_4_x.csproj
+++ b/mcs/class/System.Management/System.Management-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Messaging/System.Messaging-net_4_x.csproj b/mcs/class/System.Messaging/System.Messaging-net_4_x.csproj
index 939068bd6f7..3feed2f79e2 100644
--- a/mcs/class/System.Messaging/System.Messaging-net_4_x.csproj
+++ b/mcs/class/System.Messaging/System.Messaging-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Net.Http.Formatting/System.Net.Http.Formatting-net_4_x.csproj b/mcs/class/System.Net.Http.Formatting/System.Net.Http.Formatting-net_4_x.csproj
index f987c65b4e4..3b027182cbe 100644
--- a/mcs/class/System.Net.Http.Formatting/System.Net.Http.Formatting-net_4_x.csproj
+++ b/mcs/class/System.Net.Http.Formatting/System.Net.Http.Formatting-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Net.Http.WebRequest/System.Net.Http.WebRequest-net_4_x.csproj b/mcs/class/System.Net.Http.WebRequest/System.Net.Http.WebRequest-net_4_x.csproj
index 519b2833cba..8ee95a0c5a5 100644
--- a/mcs/class/System.Net.Http.WebRequest/System.Net.Http.WebRequest-net_4_x.csproj
+++ b/mcs/class/System.Net.Http.WebRequest/System.Net.Http.WebRequest-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Net.Http/System.Net.Http-net_4_x.csproj b/mcs/class/System.Net.Http/System.Net.Http-net_4_x.csproj
index e6e2d68457e..d45e1736538 100644
--- a/mcs/class/System.Net.Http/System.Net.Http-net_4_x.csproj
+++ b/mcs/class/System.Net.Http/System.Net.Http-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Net/System.Net-net_4_x.csproj b/mcs/class/System.Net/System.Net-net_4_x.csproj
index ac5858d1adb..8cc8e04b29d 100644
--- a/mcs/class/System.Net/System.Net-net_4_x.csproj
+++ b/mcs/class/System.Net/System.Net-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,1720</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,1720</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Numerics.Vectors/System.Numerics.Vectors-net_4_x.csproj b/mcs/class/System.Numerics.Vectors/System.Numerics.Vectors-net_4_x.csproj
index f782c91e5cd..7bb07efaa8b 100644
--- a/mcs/class/System.Numerics.Vectors/System.Numerics.Vectors-net_4_x.csproj
+++ b/mcs/class/System.Numerics.Vectors/System.Numerics.Vectors-net_4_x.csproj
@@ -14,7 +14,7 @@
     <NoStdLib>True</NoStdLib>

     

     <NoConfig>True</NoConfig>

-    

+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>

     <AppDesignerFolder>Properties</AppDesignerFolder>

     <RootNamespace>

     </RootNamespace>

@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -50,7 +50,8 @@
   <ItemGroup>

     <Compile Include="..\..\build\common\Consts.cs" />

     <Compile Include="..\..\build\common\SR.cs" />

-    <Compile Include="Assembly\AssemblyInfo.cs" />
  </ItemGroup>

+    <Compile Include="Assembly\AssemblyInfo.cs" />

+    <Compile Include="Assembly\TypeForwarders.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

   <Target Name="BeforeBuild">

@@ -81,6 +82,10 @@
       <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

       <Name>System-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../System.Numerics/System.Numerics-net_4_x.csproj">

+      <Project>{BD2FFDDC-BD89-4041-82F5-A696C941C7BE}</Project>

+      <Name>System.Numerics-net_4_x</Name>

+    </ProjectReference>

   </ItemGroup>

   <ItemGroup>

     <Folder Include="Properties\" />

diff --git a/mcs/class/System.Numerics/System.Numerics-net_4_x.csproj b/mcs/class/System.Numerics/System.Numerics-net_4_x.csproj
index 6fe1d3aa59a..94317ab6408 100644
--- a/mcs/class/System.Numerics/System.Numerics-net_4_x.csproj
+++ b/mcs/class/System.Numerics/System.Numerics-net_4_x.csproj
@@ -7,7 +7,7 @@
     <SchemaVersion>2.0</SchemaVersion>

     <ProjectGuid>{BD2FFDDC-BD89-4041-82F5-A696C941C7BE}</ProjectGuid>

     <OutputType>Library</OutputType>

-    <NoWarn>1699</NoWarn>

+    <NoWarn>1699,414</NoWarn>

     <OutputPath>./../../class/lib/net_4_x</OutputPath>

     <IntermediateOutputPath>obj-net_4_x</IntermediateOutputPath>

     <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

@@ -26,17 +26,17 @@
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

     <DebugSymbols>true</DebugSymbols>

     <DebugType>full</DebugType>

-    <NoWarn>1699</NoWarn>

+    <NoWarn>1699,414</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

     <DebugType>pdbonly</DebugType>

-    <NoWarn>1699</NoWarn>

+    <NoWarn>1699,414</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -54,9 +54,21 @@
     <Compile Include="..\referencesource\System.Numerics\System\Numerics\BigIntegerBuilder.cs" />

     <Compile Include="..\referencesource\System.Numerics\System\Numerics\BigNumber.cs" />

     <Compile Include="..\referencesource\System.Numerics\System\Numerics\Complex.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\HashCodeHelper.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\JITIntrinsicAttribute.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Matrix3x2.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Matrix4x4.cs" />

     <Compile Include="..\referencesource\System.Numerics\System\Numerics\NumericsHelpers.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Plane.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Quaternion.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Vector_Operations.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Vector2.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Vector2_Intrinsics.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Vector3.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Vector3_Intrinsics.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Vector4.cs" />

+    <Compile Include="..\referencesource\System.Numerics\System\Numerics\Vector4_Intrinsics.cs" />

     <Compile Include="Assembly\AssemblyInfo.cs" />

-    <Compile Include="ReferenceSources\Environment.cs" />

     <Compile Include="ReferenceSources\SR.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

diff --git a/mcs/class/System.Reactive.Core/System.Reactive.Core-net_4_x.csproj b/mcs/class/System.Reactive.Core/System.Reactive.Core-net_4_x.csproj
index 7b3dfa248de..6b0dbaca5d2 100644
--- a/mcs/class/System.Reactive.Core/System.Reactive.Core-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Core/System.Reactive.Core-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Debugger/System.Reactive.Debugger-net_4_x.csproj b/mcs/class/System.Reactive.Debugger/System.Reactive.Debugger-net_4_x.csproj
index 0fef571313a..cb27faa61c7 100644
--- a/mcs/class/System.Reactive.Debugger/System.Reactive.Debugger-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Debugger/System.Reactive.Debugger-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Experimental/System.Reactive.Experimental-net_4_x.csproj b/mcs/class/System.Reactive.Experimental/System.Reactive.Experimental-net_4_x.csproj
index 55e768b3fa4..44760b53891 100644
--- a/mcs/class/System.Reactive.Experimental/System.Reactive.Experimental-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Experimental/System.Reactive.Experimental-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Interfaces/System.Reactive.Interfaces-net_4_x.csproj b/mcs/class/System.Reactive.Interfaces/System.Reactive.Interfaces-net_4_x.csproj
index f0057b389b2..d1a1329ac13 100644
--- a/mcs/class/System.Reactive.Interfaces/System.Reactive.Interfaces-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Interfaces/System.Reactive.Interfaces-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Linq/System.Reactive.Linq-net_4_x.csproj b/mcs/class/System.Reactive.Linq/System.Reactive.Linq-net_4_x.csproj
index 67b2b8a8844..35aef2e86f8 100644
--- a/mcs/class/System.Reactive.Linq/System.Reactive.Linq-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Linq/System.Reactive.Linq-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Observable.Aliases/System.Reactive.Observable.Aliases-net_4_x.csproj b/mcs/class/System.Reactive.Observable.Aliases/System.Reactive.Observable.Aliases-net_4_x.csproj
index fcff09f9daf..d19f139fb27 100644
--- a/mcs/class/System.Reactive.Observable.Aliases/System.Reactive.Observable.Aliases-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Observable.Aliases/System.Reactive.Observable.Aliases-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.PlatformServices/System.Reactive.PlatformServices-net_4_x.csproj b/mcs/class/System.Reactive.PlatformServices/System.Reactive.PlatformServices-net_4_x.csproj
index 538ff9529d9..bff3efa656d 100644
--- a/mcs/class/System.Reactive.PlatformServices/System.Reactive.PlatformServices-net_4_x.csproj
+++ b/mcs/class/System.Reactive.PlatformServices/System.Reactive.PlatformServices-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Providers/System.Reactive.Providers-net_4_x.csproj b/mcs/class/System.Reactive.Providers/System.Reactive.Providers-net_4_x.csproj
index 0099448bd54..abb9c1df6b8 100644
--- a/mcs/class/System.Reactive.Providers/System.Reactive.Providers-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Providers/System.Reactive.Providers-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Runtime.Remoting/System.Reactive.Runtime.Remoting-net_4_x.csproj b/mcs/class/System.Reactive.Runtime.Remoting/System.Reactive.Runtime.Remoting-net_4_x.csproj
index 2802930f4d4..428bdde1984 100644
--- a/mcs/class/System.Reactive.Runtime.Remoting/System.Reactive.Runtime.Remoting-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Runtime.Remoting/System.Reactive.Runtime.Remoting-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Windows.Forms/System.Reactive.Windows.Forms-net_4_x.csproj b/mcs/class/System.Reactive.Windows.Forms/System.Reactive.Windows.Forms-net_4_x.csproj
index 6aacf0d324f..4aef05e1455 100644
--- a/mcs/class/System.Reactive.Windows.Forms/System.Reactive.Windows.Forms-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Windows.Forms/System.Reactive.Windows.Forms-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reactive.Windows.Threading/System.Reactive.Windows.Threading-net_4_x.csproj b/mcs/class/System.Reactive.Windows.Threading/System.Reactive.Windows.Threading-net_4_x.csproj
index 2399dc270ca..3470db4220e 100644
--- a/mcs/class/System.Reactive.Windows.Threading/System.Reactive.Windows.Threading-net_4_x.csproj
+++ b/mcs/class/System.Reactive.Windows.Threading/System.Reactive.Windows.Threading-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;HAS_EDI;PREFERASYNC;PREFER_ASYNC;HAS_AWAIT;SIGNED</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Reflection.Context/System.Reflection.Context-net_4_x.csproj b/mcs/class/System.Reflection.Context/System.Reflection.Context-net_4_x.csproj
new file mode 100644
index 00000000000..9cdf129ea88
--- /dev/null
+++ b/mcs/class/System.Reflection.Context/System.Reflection.Context-net_4_x.csproj
@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <PropertyGroup>

+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

+    <ProductVersion>9.0.30729</ProductVersion>

+    <SchemaVersion>2.0</SchemaVersion>

+    <ProjectGuid>{50A4818C-4BD7-49DB-AD2C-FF3FB0A9D392}</ProjectGuid>

+    <OutputType>Library</OutputType>

+    <NoWarn>1699</NoWarn>

+    <OutputPath>./../../class/lib/net_4_x</OutputPath>

+    <IntermediateOutputPath>obj-net_4_x</IntermediateOutputPath>

+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

+    <NoStdLib>True</NoStdLib>

+    

+    <NoConfig>True</NoConfig>

+    

+    <AppDesignerFolder>Properties</AppDesignerFolder>

+    <RootNamespace>

+    </RootNamespace>

+    <AssemblyName>System.Reflection.Context</AssemblyName>

+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>

+    <FileAlignment>512</FileAlignment>

+  </PropertyGroup>

+  

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

+    <DebugSymbols>true</DebugSymbols>

+    <DebugType>full</DebugType>

+    <NoWarn>1699</NoWarn>

+    <Optimize>false</Optimize>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

+    <DebugType>pdbonly</DebugType>

+    <NoWarn>1699</NoWarn>

+    <Optimize>true</Optimize>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <!-- Set AddAdditionalExplicitAssemblyReferences to false, otherwise if targetting .NET4.0, 

+  Microsoft.NETFramework.props will force a dependency on the assembly System.Core. This

+  is a problem to compile the Mono mscorlib.dll -->

+  <PropertyGroup>

+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>

+  </PropertyGroup>

+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

+  <ItemGroup>

+    <Compile Include="..\..\build\common\Consts.cs" />

+    <Compile Include="..\..\build\common\Locale.cs" />

+    <Compile Include="..\..\build\common\MonoTODOAttribute.cs" />

+    <Compile Include="Assembly\AssemblyInfo.cs" />

+    <Compile Include="System.Reflection.Context\CustomReflectionContext.cs" />
  </ItemGroup>

+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

+       Other similar extension points exist, see Microsoft.Common.targets.

+  <Target Name="BeforeBuild">

+  </Target>

+  <Target Name="AfterBuild">

+  </Target>

+  -->

+  <PropertyGroup>

+    <PreBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PreBuildEvent>

+    <PreBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PreBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PostBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PostBuildEvent>

+  </PropertyGroup>

+  <ItemGroup>

+    <ProjectReference Include="../corlib/corlib-net_4_x.csproj">

+      <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

+      <Name>corlib-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../System/System-net_4_x.csproj">

+      <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

+      <Name>System-net_4_x</Name>

+    </ProjectReference>

+  </ItemGroup>

+  <ItemGroup>

+    <Folder Include="Properties\" />

+  </ItemGroup>

+</Project>

+
diff --git a/mcs/class/System.Runtime.Caching/System.Runtime.Caching-net_4_x.csproj b/mcs/class/System.Runtime.Caching/System.Runtime.Caching-net_4_x.csproj
index 3089b404bdf..62e55d55d22 100644
--- a/mcs/class/System.Runtime.Caching/System.Runtime.Caching-net_4_x.csproj
+++ b/mcs/class/System.Runtime.Caching/System.Runtime.Caching-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,414</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,414</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -93,13 +93,13 @@
     <Compile Include="..\referencesource\System.Runtime.Caching\System\Caching\SafeBitVector32.cs" />

     <Compile Include="..\referencesource\System.Runtime.Caching\System\Caching\SafeRegistryHandle.cs" />

     <Compile Include="..\referencesource\System.Runtime.Caching\System\Caching\SqlChangeMonitor.cs" />

+    <Compile Include="..\referencesource\System.Runtime.Caching\System\Caching\SRef.cs" />

     <Compile Include="..\System.Web\System.Web.Configuration_2.0\NullableStringValidator.cs" />

     <Compile Include="Assembly\AssemblyInfo.cs" />

     <Compile Include="ReferenceSources\CacheEntryCollection.cs" />

     <Compile Include="ReferenceSources\CacheExpires.cs" />

     <Compile Include="ReferenceSources\CacheUsage.cs" />

-    <Compile Include="ReferenceSources\R.Designer.cs" />

-    <Compile Include="ReferenceSources\SRef.cs" />
  </ItemGroup>

+    <Compile Include="ReferenceSources\R.Designer.cs" />
  </ItemGroup>

   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

        Other similar extension points exist, see Microsoft.Common.targets.

   <Target Name="BeforeBuild">

diff --git a/mcs/class/System.Runtime.DurableInstancing/System.Runtime.DurableInstancing-net_4_x.csproj b/mcs/class/System.Runtime.DurableInstancing/System.Runtime.DurableInstancing-net_4_x.csproj
index 480589216b3..fc8dd7f2258 100644
--- a/mcs/class/System.Runtime.DurableInstancing/System.Runtime.DurableInstancing-net_4_x.csproj
+++ b/mcs/class/System.Runtime.DurableInstancing/System.Runtime.DurableInstancing-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Runtime.InteropServices.RuntimeInformation/System.Runtime.InteropServices.RuntimeInformation-net_4_x.csproj b/mcs/class/System.Runtime.InteropServices.RuntimeInformation/System.Runtime.InteropServices.RuntimeInformation-net_4_x.csproj
new file mode 100644
index 00000000000..7493504c40f
--- /dev/null
+++ b/mcs/class/System.Runtime.InteropServices.RuntimeInformation/System.Runtime.InteropServices.RuntimeInformation-net_4_x.csproj
@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <PropertyGroup>

+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

+    <ProductVersion>9.0.30729</ProductVersion>

+    <SchemaVersion>2.0</SchemaVersion>

+    <ProjectGuid>{1E1BC1A8-EAD2-496C-A6D6-8AFABD741F56}</ProjectGuid>

+    <OutputType>Library</OutputType>

+    <NoWarn>1699</NoWarn>

+    <OutputPath>./../../class/lib/net_4_x</OutputPath>

+    <IntermediateOutputPath>obj-net_4_x</IntermediateOutputPath>

+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

+    <NoStdLib>True</NoStdLib>

+    

+    <NoConfig>True</NoConfig>

+    

+    <AppDesignerFolder>Properties</AppDesignerFolder>

+    <RootNamespace>

+    </RootNamespace>

+    <AssemblyName>System.Runtime.InteropServices.RuntimeInformation</AssemblyName>

+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>

+    <FileAlignment>512</FileAlignment>

+  </PropertyGroup>

+  

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

+    <DebugSymbols>true</DebugSymbols>

+    <DebugType>full</DebugType>

+    <NoWarn>1699</NoWarn>

+    <Optimize>false</Optimize>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

+    <DebugType>pdbonly</DebugType>

+    <NoWarn>1699</NoWarn>

+    <Optimize>true</Optimize>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <!-- Set AddAdditionalExplicitAssemblyReferences to false, otherwise if targetting .NET4.0, 

+  Microsoft.NETFramework.props will force a dependency on the assembly System.Core. This

+  is a problem to compile the Mono mscorlib.dll -->

+  <PropertyGroup>

+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>

+  </PropertyGroup>

+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

+  <ItemGroup>

+    <Compile Include="..\..\build\common\Consts.cs" />

+    <Compile Include="..\..\build\common\Locale.cs" />

+    <Compile Include="..\..\build\common\MonoTODOAttribute.cs" />

+    <Compile Include="Assembly\AssemblyInfo.cs" />

+    <Compile Include="System.Runtime.InteropServices\Architecture.cs" />

+    <Compile Include="System.Runtime.InteropServices\OSPlatform.cs" />

+    <Compile Include="System.Runtime.InteropServices\RuntimeInformation.cs" />
  </ItemGroup>

+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

+       Other similar extension points exist, see Microsoft.Common.targets.

+  <Target Name="BeforeBuild">

+  </Target>

+  <Target Name="AfterBuild">

+  </Target>

+  -->

+  <PropertyGroup>

+    <PreBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PreBuildEvent>

+    <PreBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PreBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PostBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PostBuildEvent>

+  </PropertyGroup>

+  <ItemGroup>

+    <ProjectReference Include="../corlib/corlib-net_4_x.csproj">

+      <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

+      <Name>corlib-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../System/System-net_4_x.csproj">

+      <Project>{2762E921-91A8-4C87-91E9-BA628013F753}</Project>

+      <Name>System-net_4_x</Name>

+    </ProjectReference>

+  </ItemGroup>

+  <ItemGroup>

+    <Folder Include="Properties\" />

+  </ItemGroup>

+</Project>

+
diff --git a/mcs/class/System.Runtime.Remoting/System.Runtime.Remoting-net_4_x.csproj b/mcs/class/System.Runtime.Remoting/System.Runtime.Remoting-net_4_x.csproj
index 5601f7c47a1..2b3eb08330b 100644
--- a/mcs/class/System.Runtime.Remoting/System.Runtime.Remoting-net_4_x.csproj
+++ b/mcs/class/System.Runtime.Remoting/System.Runtime.Remoting-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Runtime.Serialization.Formatters.Soap/System.Runtime.Serialization.Formatters.Soap-net_4_x.csproj b/mcs/class/System.Runtime.Serialization.Formatters.Soap/System.Runtime.Serialization.Formatters.Soap-net_4_x.csproj
index d5192c051b0..85b88dc5e00 100644
--- a/mcs/class/System.Runtime.Serialization.Formatters.Soap/System.Runtime.Serialization.Formatters.Soap-net_4_x.csproj
+++ b/mcs/class/System.Runtime.Serialization.Formatters.Soap/System.Runtime.Serialization.Formatters.Soap-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization-net_4_x.csproj b/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization-net_4_x.csproj
index f5de8b68d7f..41d0ca69a6e 100644
--- a/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization-net_4_x.csproj
+++ b/mcs/class/System.Runtime.Serialization/System.Runtime.Serialization-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,168,169,219,414</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NO_DYNAMIC_CODEGEN;NET_3_0</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NO_DYNAMIC_CODEGEN;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,168,169,219,414</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NO_DYNAMIC_CODEGEN;NET_3_0</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NO_DYNAMIC_CODEGEN;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -206,6 +206,7 @@
     <Compile Include="ReferenceSources\FxTrace.cs" />

     <Compile Include="ReferenceSources\JsonFormatReaderGenerator_static.cs" />

     <Compile Include="ReferenceSources\JsonFormatWriterGenerator_static.cs" />

+    <Compile Include="ReferenceSources\LocalAppContextSwitches.cs" />

     <Compile Include="ReferenceSources\SR.cs" />

     <Compile Include="ReferenceSources\SR.missing.cs" />

     <Compile Include="ReferenceSources\XmlDataContract_static.cs" />

@@ -254,10 +255,6 @@
       <Project>{5769B536-7E8E-4C2A-8671-6B256D0F620B}</Project>

       <Name>System.ServiceModel.Internals-net_4_x</Name>

     </ProjectReference>

-    <ProjectReference Include="../SMDiagnostics/SMDiagnostics-net_4_x.csproj">

-      <Project>{8B8C3ED9-96F9-49B3-B355-9FD3D29DD3AD}</Project>

-      <Name>SMDiagnostics-net_4_x</Name>

-    </ProjectReference>

     <ProjectReference Include="../System.Data/System.Data-net_4_x.csproj">

       <Project>{EC439BB8-FFED-4A32-A05D-2FA3A70CAD64}</Project>

       <Name>System.Data-net_4_x</Name>

@@ -266,6 +263,10 @@
       <Project>{D5CDC09C-F19A-4811-A6C8-70F51CBFB644}</Project>

       <Name>System.Configuration-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../SMDiagnostics/SMDiagnostics-net_4_x.csproj">

+      <Project>{8B8C3ED9-96F9-49B3-B355-9FD3D29DD3AD}</Project>

+      <Name>SMDiagnostics-net_4_x</Name>

+    </ProjectReference>

   </ItemGroup>

   <ItemGroup>

     <Folder Include="Properties\" />

diff --git a/mcs/class/System.Security/System.Security-net_4_x.csproj b/mcs/class/System.Security/System.Security-net_4_x.csproj
index c272c83959d..bbe95fc7dad 100644
--- a/mcs/class/System.Security/System.Security-net_4_x.csproj
+++ b/mcs/class/System.Security/System.Security-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618,414</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;SECURITY_DEP</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;SECURITY_DEP</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618,414</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;SECURITY_DEP</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;SECURITY_DEP</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.ServiceModel.Activation/System.ServiceModel.Activation-net_4_x.csproj b/mcs/class/System.ServiceModel.Activation/System.ServiceModel.Activation-net_4_x.csproj
index e959175b733..872a55bc055 100644
--- a/mcs/class/System.ServiceModel.Activation/System.ServiceModel.Activation-net_4_x.csproj
+++ b/mcs/class/System.ServiceModel.Activation/System.ServiceModel.Activation-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.ServiceModel.Discovery/System.ServiceModel.Discovery-net_4_x.csproj b/mcs/class/System.ServiceModel.Discovery/System.ServiceModel.Discovery-net_4_x.csproj
index 3f021276d44..e6c52711f48 100644
--- a/mcs/class/System.ServiceModel.Discovery/System.ServiceModel.Discovery-net_4_x.csproj
+++ b/mcs/class/System.ServiceModel.Discovery/System.ServiceModel.Discovery-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5;NET_3_0</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5;NET_3_0</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.ServiceModel.Internals/System.ServiceModel.Internals-net_4_x.csproj b/mcs/class/System.ServiceModel.Internals/System.ServiceModel.Internals-net_4_x.csproj
index 39e5a6128f2..80a51f65d3d 100644
--- a/mcs/class/System.ServiceModel.Internals/System.ServiceModel.Internals-net_4_x.csproj
+++ b/mcs/class/System.ServiceModel.Internals/System.ServiceModel.Internals-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.ServiceModel.Routing/System.ServiceModel.Routing-net_4_x.csproj b/mcs/class/System.ServiceModel.Routing/System.ServiceModel.Routing-net_4_x.csproj
index 35714061b5b..e77846e4b0f 100644
--- a/mcs/class/System.ServiceModel.Routing/System.ServiceModel.Routing-net_4_x.csproj
+++ b/mcs/class/System.ServiceModel.Routing/System.ServiceModel.Routing-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5;NET_3_0</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5;NET_3_0</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.ServiceModel.Web/System.ServiceModel.Web-net_4_x.csproj b/mcs/class/System.ServiceModel.Web/System.ServiceModel.Web-net_4_x.csproj
index 6724c378631..6eb906063d5 100644
--- a/mcs/class/System.ServiceModel.Web/System.ServiceModel.Web-net_4_x.csproj
+++ b/mcs/class/System.ServiceModel.Web/System.ServiceModel.Web-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5;NET_3_0</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5;NET_3_0</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.ServiceModel/System.ServiceModel-net_4_x.csproj b/mcs/class/System.ServiceModel/System.ServiceModel-net_4_x.csproj
index e986534126d..b54ee17594c 100644
--- a/mcs/class/System.ServiceModel/System.ServiceModel-net_4_x.csproj
+++ b/mcs/class/System.ServiceModel/System.ServiceModel-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,414,169,67,3005,436,219,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;TRACE;NET_3_0;HAS_ACTIVATION</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;TRACE;NET_3_0;HAS_ACTIVATION</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,414,169,67,3005,436,219,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;TRACE;NET_3_0;HAS_ACTIVATION</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;TRACE;NET_3_0;HAS_ACTIVATION</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -827,14 +827,12 @@
     <Compile Include="System.ServiceModel.PeerResolvers\UnregisterInfo.cs" />

     <Compile Include="System.ServiceModel.PeerResolvers\UpdateInfo.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\AuthenticatorCommunicationObject.cs" />

-    <Compile Include="System.ServiceModel.Security.Tokens\BinarySecretSecurityToken.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\ClaimTypeRequirement.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\CommunicationSecurityTokenAuthenticator.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\CommunicationSecurityTokenProvider.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\DerivedKeySecurityToken.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\IIssuanceSecurityTokenAuthenticator.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\InitiatorServiceModelSecurityTokenRequirement.cs" />

-    <Compile Include="System.ServiceModel.Security.Tokens\InternalEncryptedKeyIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\ISecurityContextSecurityTokenCache.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\IssuedSecurityTokenHandler.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\IssuedSecurityTokenParameters.cs" />

@@ -868,10 +866,8 @@
     <Compile Include="System.ServiceModel.Security.Tokens\TlsClientSession.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\TlsServerSession.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\UserNameSecurityTokenParameters.cs" />

-    <Compile Include="System.ServiceModel.Security.Tokens\WrappedKeySecurityToken.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\X509SecurityTokenParameters.cs" />

     <Compile Include="System.ServiceModel.Security\BasicSecurityProfileVersion.cs" />

-    <Compile Include="System.ServiceModel.Security\BinarySecretKeyIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security\ChannelProtectionRequirements.cs" />

     <Compile Include="System.ServiceModel.Security\DataProtectionSecurityStateEncoder.cs" />

     <Compile Include="System.ServiceModel.Security\ExpiredSecurityTokenException.cs" />

@@ -884,7 +880,6 @@
     <Compile Include="System.ServiceModel.Security\IssuedTokenClientCredential.cs" />

     <Compile Include="System.ServiceModel.Security\IssuedTokenServiceCredential.cs" />

     <Compile Include="System.ServiceModel.Security\KeyEntropyMode.cs" />

-    <Compile Include="System.ServiceModel.Security\KeyNameIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security\MessagePartSpecification.cs" />

     <Compile Include="System.ServiceModel.Security\MessageProtectionOrder.cs" />

     <Compile Include="System.ServiceModel.Security\MessageSecurityException.cs" />

@@ -894,7 +889,6 @@
     <Compile Include="System.ServiceModel.Security\SecureConversationVersion.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityAccessDeniedException.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityAlgorithmSuite.cs" />

-    <Compile Include="System.ServiceModel.Security\SecurityContextKeyIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityCredentialsManager.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityMessageProperty.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityNegotiationException.cs" />

@@ -1002,6 +996,7 @@
     <Compile Include="System.ServiceModel\NamedPipeTransportSecurity.cs" />

     <Compile Include="System.ServiceModel\NetHttpBinding.cs" />

     <Compile Include="System.ServiceModel\NetHttpMessageEncoding.cs" />

+    <Compile Include="System.ServiceModel\NetHttpsBinding.cs" />

     <Compile Include="System.ServiceModel\NetMsmqBinding.cs" />

     <Compile Include="System.ServiceModel\NetMsmqSecurity.cs" />

     <Compile Include="System.ServiceModel\NetNamedPipeBinding.cs" />

@@ -1102,6 +1097,10 @@
       <Project>{D845AD9D-3CCB-49CB-9543-028678E94938}</Project>

       <Name>System.Runtime.Serialization-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../System.IdentityModel/System.IdentityModel-net_4_x.csproj">

+      <Project>{FA718FA9-32C2-4BAC-BAAB-DB3A7A326D4C}</Project>

+      <Name>System.IdentityModel-net_4_x</Name>

+    </ProjectReference>

     <ProjectReference Include="../System.Configuration/System.Configuration-net_4_x.csproj">

       <Project>{D5CDC09C-F19A-4811-A6C8-70F51CBFB644}</Project>

       <Name>System.Configuration-net_4_x</Name>

@@ -1114,10 +1113,6 @@
       <Project>{3ED36717-A9D1-4289-8949-9B7F39766DEB}</Project>

       <Name>System.Security-net_4_x</Name>

     </ProjectReference>

-    <ProjectReference Include="../System.IdentityModel/System.IdentityModel-net_4_x.csproj">

-      <Project>{FA718FA9-32C2-4BAC-BAAB-DB3A7A326D4C}</Project>

-      <Name>System.IdentityModel-net_4_x</Name>

-    </ProjectReference>

     <ProjectReference Include="../System.IdentityModel.Selectors/System.IdentityModel.Selectors-net_4_x.csproj">

       <Project>{BBA32980-B28C-476D-AEB0-892F1B1DFB5E}</Project>

       <Name>System.IdentityModel.Selectors-net_4_x</Name>

diff --git a/mcs/class/System.ServiceModel/System.ServiceModel-plainservice-net_4_x.csproj b/mcs/class/System.ServiceModel/System.ServiceModel-plainservice-net_4_x.csproj
index 4608b887c5e..9b138be6a04 100644
--- a/mcs/class/System.ServiceModel/System.ServiceModel-plainservice-net_4_x.csproj
+++ b/mcs/class/System.ServiceModel/System.ServiceModel-plainservice-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,414,169,67,3005,436,219,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;TRACE;NET_3_0</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;TRACE;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,414,169,67,3005,436,219,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;TRACE;NET_3_0</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;TRACE;NET_3_0</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -827,14 +827,12 @@
     <Compile Include="System.ServiceModel.PeerResolvers\UnregisterInfo.cs" />

     <Compile Include="System.ServiceModel.PeerResolvers\UpdateInfo.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\AuthenticatorCommunicationObject.cs" />

-    <Compile Include="System.ServiceModel.Security.Tokens\BinarySecretSecurityToken.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\ClaimTypeRequirement.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\CommunicationSecurityTokenAuthenticator.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\CommunicationSecurityTokenProvider.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\DerivedKeySecurityToken.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\IIssuanceSecurityTokenAuthenticator.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\InitiatorServiceModelSecurityTokenRequirement.cs" />

-    <Compile Include="System.ServiceModel.Security.Tokens\InternalEncryptedKeyIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\ISecurityContextSecurityTokenCache.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\IssuedSecurityTokenHandler.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\IssuedSecurityTokenParameters.cs" />

@@ -868,10 +866,8 @@
     <Compile Include="System.ServiceModel.Security.Tokens\TlsClientSession.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\TlsServerSession.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\UserNameSecurityTokenParameters.cs" />

-    <Compile Include="System.ServiceModel.Security.Tokens\WrappedKeySecurityToken.cs" />

     <Compile Include="System.ServiceModel.Security.Tokens\X509SecurityTokenParameters.cs" />

     <Compile Include="System.ServiceModel.Security\BasicSecurityProfileVersion.cs" />

-    <Compile Include="System.ServiceModel.Security\BinarySecretKeyIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security\ChannelProtectionRequirements.cs" />

     <Compile Include="System.ServiceModel.Security\DataProtectionSecurityStateEncoder.cs" />

     <Compile Include="System.ServiceModel.Security\ExpiredSecurityTokenException.cs" />

@@ -884,7 +880,6 @@
     <Compile Include="System.ServiceModel.Security\IssuedTokenClientCredential.cs" />

     <Compile Include="System.ServiceModel.Security\IssuedTokenServiceCredential.cs" />

     <Compile Include="System.ServiceModel.Security\KeyEntropyMode.cs" />

-    <Compile Include="System.ServiceModel.Security\KeyNameIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security\MessagePartSpecification.cs" />

     <Compile Include="System.ServiceModel.Security\MessageProtectionOrder.cs" />

     <Compile Include="System.ServiceModel.Security\MessageSecurityException.cs" />

@@ -894,7 +889,6 @@
     <Compile Include="System.ServiceModel.Security\SecureConversationVersion.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityAccessDeniedException.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityAlgorithmSuite.cs" />

-    <Compile Include="System.ServiceModel.Security\SecurityContextKeyIdentifierClause.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityCredentialsManager.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityMessageProperty.cs" />

     <Compile Include="System.ServiceModel.Security\SecurityNegotiationException.cs" />

@@ -1002,6 +996,7 @@
     <Compile Include="System.ServiceModel\NamedPipeTransportSecurity.cs" />

     <Compile Include="System.ServiceModel\NetHttpBinding.cs" />

     <Compile Include="System.ServiceModel\NetHttpMessageEncoding.cs" />

+    <Compile Include="System.ServiceModel\NetHttpsBinding.cs" />

     <Compile Include="System.ServiceModel\NetMsmqBinding.cs" />

     <Compile Include="System.ServiceModel\NetMsmqSecurity.cs" />

     <Compile Include="System.ServiceModel\NetNamedPipeBinding.cs" />

@@ -1102,6 +1097,10 @@
       <Project>{D845AD9D-3CCB-49CB-9543-028678E94938}</Project>

       <Name>System.Runtime.Serialization-net_4_x</Name>

     </ProjectReference>

+    <ProjectReference Include="../System.IdentityModel/System.IdentityModel-net_4_x.csproj">

+      <Project>{FA718FA9-32C2-4BAC-BAAB-DB3A7A326D4C}</Project>

+      <Name>System.IdentityModel-net_4_x</Name>

+    </ProjectReference>

     <ProjectReference Include="../System.Configuration/System.Configuration-net_4_x.csproj">

       <Project>{D5CDC09C-F19A-4811-A6C8-70F51CBFB644}</Project>

       <Name>System.Configuration-net_4_x</Name>

@@ -1114,10 +1113,6 @@
       <Project>{3ED36717-A9D1-4289-8949-9B7F39766DEB}</Project>

       <Name>System.Security-net_4_x</Name>

     </ProjectReference>

-    <ProjectReference Include="../System.IdentityModel/System.IdentityModel-net_4_x.csproj">

-      <Project>{FA718FA9-32C2-4BAC-BAAB-DB3A7A326D4C}</Project>

-      <Name>System.IdentityModel-net_4_x</Name>

-    </ProjectReference>

     <ProjectReference Include="../System.IdentityModel.Selectors/System.IdentityModel.Selectors-net_4_x.csproj">

       <Project>{BBA32980-B28C-476D-AEB0-892F1B1DFB5E}</Project>

       <Name>System.IdentityModel.Selectors-net_4_x</Name>

diff --git a/mcs/class/System.ServiceProcess/System.ServiceProcess-net_4_x.csproj b/mcs/class/System.ServiceProcess/System.ServiceProcess-net_4_x.csproj
index ade3d433339..5f8af6c9b30 100644
--- a/mcs/class/System.ServiceProcess/System.ServiceProcess-net_4_x.csproj
+++ b/mcs/class/System.ServiceProcess/System.ServiceProcess-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Threading.Tasks.Dataflow/System.Threading.Tasks.Dataflow-net_4_x.csproj b/mcs/class/System.Threading.Tasks.Dataflow/System.Threading.Tasks.Dataflow-net_4_x.csproj
index a793bf739fc..977b8467691 100644
--- a/mcs/class/System.Threading.Tasks.Dataflow/System.Threading.Tasks.Dataflow-net_4_x.csproj
+++ b/mcs/class/System.Threading.Tasks.Dataflow/System.Threading.Tasks.Dataflow-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CONCURRENT_COLLECTIONS</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;CONCURRENT_COLLECTIONS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CONCURRENT_COLLECTIONS</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;CONCURRENT_COLLECTIONS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Transactions/System.Transactions-net_4_x.csproj b/mcs/class/System.Transactions/System.Transactions-net_4_x.csproj
index 0040fd6840b..7fc1e4031e6 100644
--- a/mcs/class/System.Transactions/System.Transactions-net_4_x.csproj
+++ b/mcs/class/System.Transactions/System.Transactions-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Abstractions/System.Web.Abstractions-net_4_x.csproj b/mcs/class/System.Web.Abstractions/System.Web.Abstractions-net_4_x.csproj
index b7bfc3e76b5..3a4f38fddcd 100644
--- a/mcs/class/System.Web.Abstractions/System.Web.Abstractions-net_4_x.csproj
+++ b/mcs/class/System.Web.Abstractions/System.Web.Abstractions-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.ApplicationServices/System.Web.ApplicationServices-net_4_x.csproj b/mcs/class/System.Web.ApplicationServices/System.Web.ApplicationServices-net_4_x.csproj
index 461643c497b..9eff14306ed 100644
--- a/mcs/class/System.Web.ApplicationServices/System.Web.ApplicationServices-net_4_x.csproj
+++ b/mcs/class/System.Web.ApplicationServices/System.Web.ApplicationServices-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;SYSTEM_WEB_APPLICATIONSERVICES</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;SYSTEM_WEB_APPLICATIONSERVICES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;SYSTEM_WEB_APPLICATIONSERVICES</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;SYSTEM_WEB_APPLICATIONSERVICES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.DynamicData/System.Web.DynamicData-net_4_x.csproj b/mcs/class/System.Web.DynamicData/System.Web.DynamicData-net_4_x.csproj
index 84781bfe0b9..9cc4aaa72a4 100644
--- a/mcs/class/System.Web.DynamicData/System.Web.DynamicData-net_4_x.csproj
+++ b/mcs/class/System.Web.DynamicData/System.Web.DynamicData-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Extensions.Design/System.Web.Extensions.Design-net_4_x.csproj b/mcs/class/System.Web.Extensions.Design/System.Web.Extensions.Design-net_4_x.csproj
index a812da16665..d0077c92923 100644
--- a/mcs/class/System.Web.Extensions.Design/System.Web.Extensions.Design-net_4_x.csproj
+++ b/mcs/class/System.Web.Extensions.Design/System.Web.Extensions.Design-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Extensions/System.Web.Extensions-net_4_x.csproj b/mcs/class/System.Web.Extensions/System.Web.Extensions-net_4_x.csproj
index d008409de93..7a209dc6184 100644
--- a/mcs/class/System.Web.Extensions/System.Web.Extensions-net_4_x.csproj
+++ b/mcs/class/System.Web.Extensions/System.Web.Extensions-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5;SYSTEM_WEB_EXTENSIONS</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;SYSTEM_WEB_EXTENSIONS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;NET_3_5;SYSTEM_WEB_EXTENSIONS</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;SYSTEM_WEB_EXTENSIONS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Http.SelfHost/System.Web.Http.SelfHost-net_4_x.csproj b/mcs/class/System.Web.Http.SelfHost/System.Web.Http.SelfHost-net_4_x.csproj
index 70ba4af74c2..22fbfe51f01 100644
--- a/mcs/class/System.Web.Http.SelfHost/System.Web.Http.SelfHost-net_4_x.csproj
+++ b/mcs/class/System.Web.Http.SelfHost/System.Web.Http.SelfHost-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Http.WebHost/System.Web.Http.WebHost-net_4_x.csproj b/mcs/class/System.Web.Http.WebHost/System.Web.Http.WebHost-net_4_x.csproj
index 0d1b62859ab..eafaa10d634 100644
--- a/mcs/class/System.Web.Http.WebHost/System.Web.Http.WebHost-net_4_x.csproj
+++ b/mcs/class/System.Web.Http.WebHost/System.Web.Http.WebHost-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Http/System.Web.Http-net_4_x.csproj b/mcs/class/System.Web.Http/System.Web.Http-net_4_x.csproj
index bb5c8db8c3f..4e373d375e7 100644
--- a/mcs/class/System.Web.Http/System.Web.Http-net_4_x.csproj
+++ b/mcs/class/System.Web.Http/System.Web.Http-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETMVC</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETMVC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Mobile/System.Web.Mobile-net_4_x.csproj b/mcs/class/System.Web.Mobile/System.Web.Mobile-net_4_x.csproj
index bc1337a2a49..2fd69b6fb98 100644
--- a/mcs/class/System.Web.Mobile/System.Web.Mobile-net_4_x.csproj
+++ b/mcs/class/System.Web.Mobile/System.Web.Mobile-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Mvc3/System.Web.Mvc3-net_4_x.csproj b/mcs/class/System.Web.Mvc3/System.Web.Mvc3-net_4_x.csproj
index 3b76937bb62..3a19781b61d 100644
--- a/mcs/class/System.Web.Mvc3/System.Web.Mvc3-net_4_x.csproj
+++ b/mcs/class/System.Web.Mvc3/System.Web.Mvc3-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Razor/System.Web.Razor-net_4_x.csproj b/mcs/class/System.Web.Razor/System.Web.Razor-net_4_x.csproj
index 7b693416b89..db96ee83d51 100644
--- a/mcs/class/System.Web.Razor/System.Web.Razor-net_4_x.csproj
+++ b/mcs/class/System.Web.Razor/System.Web.Razor-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETWEBPAGES</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETWEBPAGES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETWEBPAGES</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETWEBPAGES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.RegularExpressions/System.Web.RegularExpressions-net_4_x.csproj b/mcs/class/System.Web.RegularExpressions/System.Web.RegularExpressions-net_4_x.csproj
index be101eaa2a8..c8ee4200e76 100644
--- a/mcs/class/System.Web.RegularExpressions/System.Web.RegularExpressions-net_4_x.csproj
+++ b/mcs/class/System.Web.RegularExpressions/System.Web.RegularExpressions-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Routing/System.Web.Routing-net_4_x.csproj b/mcs/class/System.Web.Routing/System.Web.Routing-net_4_x.csproj
index 4f47b14286d..0e4835c786f 100644
--- a/mcs/class/System.Web.Routing/System.Web.Routing-net_4_x.csproj
+++ b/mcs/class/System.Web.Routing/System.Web.Routing-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.Services/System.Web.Services-net_4_x.csproj b/mcs/class/System.Web.Services/System.Web.Services-net_4_x.csproj
index 0dfc8236d4b..26fa6cc83db 100644
--- a/mcs/class/System.Web.Services/System.Web.Services-net_4_x.csproj
+++ b/mcs/class/System.Web.Services/System.Web.Services-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,168,169,219,414,612,649</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_BROKEN_CONFIGURATION_DLL</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;MONO_BROKEN_CONFIGURATION_DLL</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,168,169,219,414,612,649</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;MONO_BROKEN_CONFIGURATION_DLL</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;MONO_BROKEN_CONFIGURATION_DLL</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.WebPages.Deployment/System.Web.WebPages.Deployment-net_4_x.csproj b/mcs/class/System.Web.WebPages.Deployment/System.Web.WebPages.Deployment-net_4_x.csproj
index 6fd9784625d..da48eae1e67 100644
--- a/mcs/class/System.Web.WebPages.Deployment/System.Web.WebPages.Deployment-net_4_x.csproj
+++ b/mcs/class/System.Web.WebPages.Deployment/System.Web.WebPages.Deployment-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETWEBPAGES</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETWEBPAGES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETWEBPAGES</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETWEBPAGES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.WebPages.Razor/System.Web.WebPages.Razor-net_4_x.csproj b/mcs/class/System.Web.WebPages.Razor/System.Web.WebPages.Razor-net_4_x.csproj
index 9e427e5ed1a..eb59c16adb7 100644
--- a/mcs/class/System.Web.WebPages.Razor/System.Web.WebPages.Razor-net_4_x.csproj
+++ b/mcs/class/System.Web.WebPages.Razor/System.Web.WebPages.Razor-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETWEBPAGES</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETWEBPAGES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETWEBPAGES</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETWEBPAGES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web.WebPages/System.Web.WebPages-net_4_x.csproj b/mcs/class/System.Web.WebPages/System.Web.WebPages-net_4_x.csproj
index 28ca085172c..4cd3951bc0a 100644
--- a/mcs/class/System.Web.WebPages/System.Web.WebPages-net_4_x.csproj
+++ b/mcs/class/System.Web.WebPages/System.Web.WebPages-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETWEBPAGES</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETWEBPAGES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASPNETWEBPAGES</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASPNETWEBPAGES</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Web/System.Web-net_4_x.csproj b/mcs/class/System.Web/System.Web-net_4_x.csproj
index 0b1699b80a4..0daea634104 100644
--- a/mcs/class/System.Web/System.Web-net_4_x.csproj
+++ b/mcs/class/System.Web/System.Web-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,612,618,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;INSIDE_SYSTEM_WEB;WEBSERVICES_DEP</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;INSIDE_SYSTEM_WEB;WEBSERVICES_DEP</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,612,618,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;INSIDE_SYSTEM_WEB;WEBSERVICES_DEP</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;INSIDE_SYSTEM_WEB;WEBSERVICES_DEP</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -492,6 +492,7 @@
     <Compile Include="..\referencesource\System.Web\Util\AssemblyUtil.cs" />

     <Compile Include="..\referencesource\System.Web\Util\BinaryCompatibility.cs" />

     <Compile Include="..\referencesource\System.Web\Util\DateTimeUtil.cs" />

+    <Compile Include="..\referencesource\System.Web\Util\Debug.cs" />

     <Compile Include="..\referencesource\System.Web\Util\DisposableAction.cs" />

     <Compile Include="..\referencesource\System.Web\Util\DoNotResetAttribute.cs" />

     <Compile Include="..\referencesource\System.Web\Util\EmptyCollection.cs" />

@@ -539,6 +540,7 @@
     <Compile Include="..\System.Windows.Forms\System.Resources\ResXResourceWriter.cs" />

     <Compile Include="..\System.Windows.Forms\System.Resources\SerializedFromResXHandler.cs" />

     <Compile Include="..\System.Windows.Forms\System.Resources\TypeConverterFromResXHandler.cs" />

+    <Compile Include="..\System\System\MonoToolsLocator.cs" />

     <Compile Include="Assembly\AssemblyInfo.cs" />

     <Compile Include="Mono.Web.Util\ISectionSettingsMapper.cs" />

     <Compile Include="Mono.Web.Util\MembershipSectionMapper.cs" />

diff --git a/mcs/class/System.Web/System.Web-plainweb-net_4_x.csproj b/mcs/class/System.Web/System.Web-plainweb-net_4_x.csproj
index 9d2976f9148..8a5e692384c 100644
--- a/mcs/class/System.Web/System.Web-plainweb-net_4_x.csproj
+++ b/mcs/class/System.Web/System.Web-plainweb-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,612,618,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;INSIDE_SYSTEM_WEB</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;INSIDE_SYSTEM_WEB</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,612,618,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;INSIDE_SYSTEM_WEB</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;INSIDE_SYSTEM_WEB</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -492,6 +492,7 @@
     <Compile Include="..\referencesource\System.Web\Util\AssemblyUtil.cs" />

     <Compile Include="..\referencesource\System.Web\Util\BinaryCompatibility.cs" />

     <Compile Include="..\referencesource\System.Web\Util\DateTimeUtil.cs" />

+    <Compile Include="..\referencesource\System.Web\Util\Debug.cs" />

     <Compile Include="..\referencesource\System.Web\Util\DisposableAction.cs" />

     <Compile Include="..\referencesource\System.Web\Util\DoNotResetAttribute.cs" />

     <Compile Include="..\referencesource\System.Web\Util\EmptyCollection.cs" />

@@ -539,6 +540,7 @@
     <Compile Include="..\System.Windows.Forms\System.Resources\ResXResourceWriter.cs" />

     <Compile Include="..\System.Windows.Forms\System.Resources\SerializedFromResXHandler.cs" />

     <Compile Include="..\System.Windows.Forms\System.Resources\TypeConverterFromResXHandler.cs" />

+    <Compile Include="..\System\System\MonoToolsLocator.cs" />

     <Compile Include="Assembly\AssemblyInfo.cs" />

     <Compile Include="Mono.Web.Util\ISectionSettingsMapper.cs" />

     <Compile Include="Mono.Web.Util\MembershipSectionMapper.cs" />

diff --git a/mcs/class/System.Windows.Forms.DataVisualization/System.Windows.Forms.DataVisualization-net_4_x.csproj b/mcs/class/System.Windows.Forms.DataVisualization/System.Windows.Forms.DataVisualization-net_4_x.csproj
index 9064929de01..ef0b5e703eb 100644
--- a/mcs/class/System.Windows.Forms.DataVisualization/System.Windows.Forms.DataVisualization-net_4_x.csproj
+++ b/mcs/class/System.Windows.Forms.DataVisualization/System.Windows.Forms.DataVisualization-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Windows.Forms/System.Windows.Forms-net_4_x.csproj b/mcs/class/System.Windows.Forms/System.Windows.Forms-net_4_x.csproj
index c1e931e0a9b..2485b043708 100644
--- a/mcs/class/System.Windows.Forms/System.Windows.Forms-net_4_x.csproj
+++ b/mcs/class/System.Windows.Forms/System.Windows.Forms-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618,612,809</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618,612,809</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -50,6 +50,7 @@
   <ItemGroup>

     <Compile Include="..\..\build\common\Consts.cs" />

     <Compile Include="..\..\build\common\MonoTODOAttribute.cs" />

+    <Compile Include="..\System\System\MonoToolsLocator.cs" />

     <Compile Include="Assembly\AssemblyInfo.cs" />

     <Compile Include="Assembly\Locale.cs" />

     <Compile Include="System.Resources\AssemblyNamesTypeResolutionService.cs" />

diff --git a/mcs/class/System.Windows/System.Windows-net_4_x.csproj b/mcs/class/System.Windows/System.Windows-net_4_x.csproj
index 59ba68253f7..dc8cff9041e 100644
--- a/mcs/class/System.Windows/System.Windows-net_4_x.csproj
+++ b/mcs/class/System.Windows/System.Windows-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Workflow.Activities/System.Workflow.Activities-net_4_x.csproj b/mcs/class/System.Workflow.Activities/System.Workflow.Activities-net_4_x.csproj
index c4285270bae..1192e64e366 100644
--- a/mcs/class/System.Workflow.Activities/System.Workflow.Activities-net_4_x.csproj
+++ b/mcs/class/System.Workflow.Activities/System.Workflow.Activities-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Workflow.ComponentModel/System.Workflow.ComponentModel-net_4_x.csproj b/mcs/class/System.Workflow.ComponentModel/System.Workflow.ComponentModel-net_4_x.csproj
index 32d268ac86e..af61a000c5e 100644
--- a/mcs/class/System.Workflow.ComponentModel/System.Workflow.ComponentModel-net_4_x.csproj
+++ b/mcs/class/System.Workflow.ComponentModel/System.Workflow.ComponentModel-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Workflow.Runtime/System.Workflow.Runtime-net_4_x.csproj b/mcs/class/System.Workflow.Runtime/System.Workflow.Runtime-net_4_x.csproj
index ecceeff1d25..07b190c018b 100644
--- a/mcs/class/System.Workflow.Runtime/System.Workflow.Runtime-net_4_x.csproj
+++ b/mcs/class/System.Workflow.Runtime/System.Workflow.Runtime-net_4_x.csproj
@@ -34,7 +34,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -42,7 +42,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.XML/System.Xml-bare-net_4_x.csproj b/mcs/class/System.XML/System.Xml-bare-net_4_x.csproj
index 7eacb3ddd76..060d3f8ded0 100644
--- a/mcs/class/System.XML/System.Xml-bare-net_4_x.csproj
+++ b/mcs/class/System.XML/System.Xml-bare-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,219,414,649,1717</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASYNC</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASYNC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,219,414,649,1717</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASYNC</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASYNC</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.XML/System.Xml-net_4_x.csproj b/mcs/class/System.XML/System.Xml-net_4_x.csproj
index 753fdd5bbb8..8d3b9a7c82e 100644
--- a/mcs/class/System.XML/System.Xml-net_4_x.csproj
+++ b/mcs/class/System.XML/System.Xml-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,219,414,649,1717</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASYNC;CONFIGURATION_DEP</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;ASYNC;CONFIGURATION_DEP</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,219,414,649,1717</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;ASYNC;CONFIGURATION_DEP</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;ASYNC;CONFIGURATION_DEP</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Xaml/System.Xaml-net_4_x.csproj b/mcs/class/System.Xaml/System.Xaml-net_4_x.csproj
index a5d11aeffb1..b2743f40fa7 100644
--- a/mcs/class/System.Xaml/System.Xaml-net_4_x.csproj
+++ b/mcs/class/System.Xaml/System.Xaml-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Xml.Linq/System.Xml.Linq-net_4_x.csproj b/mcs/class/System.Xml.Linq/System.Xml.Linq-net_4_x.csproj
index e3988ed811f..be665cdd36e 100644
--- a/mcs/class/System.Xml.Linq/System.Xml.Linq-net_4_x.csproj
+++ b/mcs/class/System.Xml.Linq/System.Xml.Linq-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;FEATURE_SERIALIZATION</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_SERIALIZATION</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;FEATURE_SERIALIZATION</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_SERIALIZATION</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System.Xml.Serialization/System.Xml.Serialization-net_4_x.csproj b/mcs/class/System.Xml.Serialization/System.Xml.Serialization-net_4_x.csproj
index 5168c310d86..7c265e46d04 100644
--- a/mcs/class/System.Xml.Serialization/System.Xml.Serialization-net_4_x.csproj
+++ b/mcs/class/System.Xml.Serialization/System.Xml.Serialization-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/System/System-bare-net_4_x.csproj b/mcs/class/System/System-bare-net_4_x.csproj
index 62a424bb669..d36274f1727 100644
--- a/mcs/class/System/System-bare-net_4_x.csproj
+++ b/mcs/class/System/System-bare-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -504,6 +504,7 @@
     <Compile Include="..\referencesource\System\net\System\Net\_ProxyChain.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_ScatterGatherBuffers.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_Semaphore.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\_ServiceNameStore.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_TimerThread.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_WebProxyDataBuilder.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\AuthenticationScheme.cs" />

@@ -610,7 +611,6 @@
     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemMulticastIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemTcpConnection.cs" />

-    <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemUnicastIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpConnection.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpState.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpStatistics.cs" />

@@ -633,6 +633,7 @@
     <Compile Include="..\referencesource\System\net\System\Net\Sockets\ProtocolFamily.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\ProtocolType.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SelectMode.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\Socket.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketErrors.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketFlags.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketInformation.cs" />

@@ -641,7 +642,10 @@
     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketOptionName.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketShutdown.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketType.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\TCPClient.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\TCPListener.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\TransmitFileFlags.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\UDPClient.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\UdpReceiveResult.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\TransportContext.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\TransportType.cs" />

@@ -693,19 +697,23 @@
     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexRunnerFactory.cs" />

     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexTree.cs" />

     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexWriter.cs" />

+    <Compile Include="..\referencesource\System\security\system\security\Authentication\ExtendedProtection\ServiceNameCollection.cs" />

     <Compile Include="..\referencesource\System\security\system\security\Authentication\ExtendedProtection\TokenBinding.cs" />

     <Compile Include="..\referencesource\System\security\system\security\cryptography\oid.cs" />

     <Compile Include="..\referencesource\System\security\system\security\cryptography\x509\x509utils.cs" />

     <Compile Include="..\referencesource\System\security\system\security\permissions\typedescriptorpermission.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\AsyncStreamReader.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\Process.cs" />

+    <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessModuleCollection.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessStartInfo.cs" />

+    <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessThreadCollection.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\processwaithandle.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\ElapsedEventHandler.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\Timer.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\TimersDescriptionAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\collections\concurrent\BlockingCollection.cs" />

     <Compile Include="..\referencesource\System\sys\system\collections\concurrent\ConcurrentBag.cs" />

+    <Compile Include="..\referencesource\System\sys\system\Diagnostics\CodeAnalysis\ExcludeFromCodeCoverageAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\IO\ports\InternalResources.cs" />

     <Compile Include="..\referencesource\System\sys\system\runtime\interopservices\DefaultParameterValueAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\runtime\interopservices\handlecollector.cs" />

@@ -720,6 +728,7 @@
     <Compile Include="Microsoft.VisualBasic\VBCodeCompiler.cs" />

     <Compile Include="Microsoft.VisualBasic\VBCodeGenerator.cs" />

     <Compile Include="Microsoft.VisualBasic\VBCodeProvider.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeX509ChainHandle.cs" />

     <Compile Include="Microsoft.Win32\IntranetZoneCredentialPolicy.cs" />

     <Compile Include="Microsoft.Win32\PowerModeChangedEventArgs.cs" />

     <Compile Include="Microsoft.Win32\PowerModeChangedEventHandler.cs" />

@@ -740,6 +749,44 @@
     <Compile Include="Microsoft.Win32\UserPreferenceChangedEventHandler.cs" />

     <Compile Include="Microsoft.Win32\UserPreferenceChangingEventArgs.cs" />

     <Compile Include="Microsoft.Win32\UserPreferenceChangingEventHandler.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsBio.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsContext.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsError.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsException.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsKey.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsObject.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsPkcs12.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsProvider.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSsl.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSslCtx.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSslError.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsStream.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsUtils.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Chain.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Crl.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Error.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Exception.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509FileType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Format.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Lookup.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupMono.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupMonoCollection.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Name.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509NameEntryType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509NameList.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Purpose.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Revoked.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Store.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreCtx.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreManager.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509TrustKind.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509VerifyFlags.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509VerifyParam.cs" />

+    <Compile Include="Mono.Btls\X509CertificateImplBtls.cs" />

+    <Compile Include="Mono.Btls\X509ChainImplBtls.cs" />

     <Compile Include="Mono.Http\NtlmClient.cs" />

     <Compile Include="Mono.Net.Dns\DnsClass.cs" />

     <Compile Include="Mono.Net.Dns\DnsHeader.cs" />

@@ -763,12 +810,15 @@
     <Compile Include="Mono.Net.Dns\ResolverError.cs" />

     <Compile Include="Mono.Net.Dns\SimpleResolver.cs" />

     <Compile Include="Mono.Net.Dns\SimpleResolverEventArgs.cs" />

+    <Compile Include="Mono.Net.Security\AsyncProtocolRequest.cs" />

     <Compile Include="Mono.Net.Security\CallbackHelpers.cs" />

     <Compile Include="Mono.Net.Security\ChainValidationHelper.cs" />

     <Compile Include="Mono.Net.Security\IMonoSslStream.cs" />

     <Compile Include="Mono.Net.Security\IMonoTlsProvider.cs" />

     <Compile Include="Mono.Net.Security\LegacySslStream.cs" />

-    <Compile Include="Mono.Net.Security\MonoDefaultTlsProvider.cs" />

+    <Compile Include="Mono.Net.Security\LegacyTlsProvider.cs" />

+    <Compile Include="Mono.Net.Security\MobileAuthenticatedStream.cs" />

+    <Compile Include="Mono.Net.Security\MobileTlsContext.cs" />

     <Compile Include="Mono.Net.Security\MonoSslStreamImpl.cs" />

     <Compile Include="Mono.Net.Security\MonoSslStreamWrapper.cs" />

     <Compile Include="Mono.Net.Security\MonoTlsProviderFactory.cs" />

@@ -784,6 +834,7 @@
     <Compile Include="ReferenceSources\EnvironmentHelpers.cs" />

     <Compile Include="ReferenceSources\HttpApi.cs" />

     <Compile Include="ReferenceSources\HttpSysSettings.cs" />

+    <Compile Include="ReferenceSources\LocalAppContextSwitches.cs" />

     <Compile Include="ReferenceSources\Logging.cs" />

     <Compile Include="ReferenceSources\NativeMethods.cs" />

     <Compile Include="ReferenceSources\RequestCacheProtocol.cs" />

@@ -865,7 +916,6 @@
     <Compile Include="System.Configuration\UriSection.cs" />

     <Compile Include="System.Configuration\UserScopedSettingAttribute.cs" />

     <Compile Include="System.Configuration\UserSettingsGroup.cs" />

-    <Compile Include="System.Diagnostics.CodeAnalysis\ExcludeFromCodeCoverageAttribute.cs" />

     <Compile Include="System.Diagnostics\AlphabeticalEnumConverter.cs" />

     <Compile Include="System.Diagnostics\CounterCreationData.cs" />

     <Compile Include="System.Diagnostics\CounterCreationDataCollection.cs" />

@@ -914,11 +964,9 @@
     <Compile Include="System.Diagnostics\PerformanceCounterType.cs" />

     <Compile Include="System.Diagnostics\Process.cs" />

     <Compile Include="System.Diagnostics\ProcessModule.cs" />

-    <Compile Include="System.Diagnostics\ProcessModuleCollection.cs" />

     <Compile Include="System.Diagnostics\ProcessPriorityClass.cs" />

     <Compile Include="System.Diagnostics\ProcessStartInfo.cs" />

     <Compile Include="System.Diagnostics\ProcessThread.cs" />

-    <Compile Include="System.Diagnostics\ProcessThreadCollection.cs" />

     <Compile Include="System.Diagnostics\ProcessWindowStyle.cs" />

     <Compile Include="System.Diagnostics\Stopwatch.cs" />

     <Compile Include="System.Diagnostics\ThreadPriorityLevel.cs" />

@@ -1057,15 +1105,10 @@
     <Compile Include="System.Net.Security\SslPolicyErrors.cs" />

     <Compile Include="System.Net.Security\SslStream.cs" />

     <Compile Include="System.Net.Sockets\SafeSocketHandle.cs" />

-    <Compile Include="System.Net.Sockets\SendPacketsElement.cs" />

     <Compile Include="System.Net.Sockets\Socket.cs" />

     <Compile Include="System.Net.Sockets\SocketAsyncEventArgs.cs" />

-    <Compile Include="System.Net.Sockets\SocketAsyncOperation.cs" />

     <Compile Include="System.Net.Sockets\SocketAsyncResult.cs" />

     <Compile Include="System.Net.Sockets\SocketOperation.cs" />

-    <Compile Include="System.Net.Sockets\TcpClient.cs" />

-    <Compile Include="System.Net.Sockets\TcpListener.cs" />

-    <Compile Include="System.Net.Sockets\UdpClient.cs" />

     <Compile Include="System.Net.WebSockets\ClientWebSocket.cs" />

     <Compile Include="System.Net.WebSockets\ClientWebSocketOptions.cs" />

     <Compile Include="System.Net.WebSockets\HttpListenerWebSocketContext.cs" />

@@ -1105,6 +1148,7 @@
     <Compile Include="System.Net\HttpListenerPrefixCollection.cs" />

     <Compile Include="System.Net\HttpListenerRequest.cs" />

     <Compile Include="System.Net\HttpListenerResponse.cs" />

+    <Compile Include="System.Net\HttpListenerResponseHelper.cs" />

     <Compile Include="System.Net\HttpListenerTimeoutManager.cs" />

     <Compile Include="System.Net\HttpRequestCreator.cs" />

     <Compile Include="System.Net\HttpStreamAsyncResult.cs" />

@@ -1160,7 +1204,6 @@
     <Compile Include="System.Security.Authentication.ExtendedProtection\ExtendedProtectionPolicyTypeConverter.cs" />

     <Compile Include="System.Security.Authentication.ExtendedProtection\PolicyEnforcement.cs" />

     <Compile Include="System.Security.Authentication.ExtendedProtection\ProtectionScenario.cs" />

-    <Compile Include="System.Security.Authentication.ExtendedProtection\ServiceNameCollection.cs" />

     <Compile Include="System.Security.Authentication\AuthenticationException.cs" />

     <Compile Include="System.Security.Authentication\CipherAlgorithmType.cs" />

     <Compile Include="System.Security.Authentication\ExchangeAlgorithmType.cs" />

@@ -1181,6 +1224,7 @@
     <Compile Include="System.Security.Cryptography.X509Certificates\X509Certificate2Impl.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509Certificate2ImplMono.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509CertificateCollection.cs" />

+    <Compile Include="System.Security.Cryptography.X509Certificates\X509CertificateImplCollection.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509Chain.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509ChainElement.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509ChainElementCollection.cs" />

@@ -1223,6 +1267,7 @@
     <Compile Include="System.Web\AspNetHostingPermissionLevel.cs" />

     <Compile Include="System.Windows.Input\ICommand.cs" />

     <Compile Include="System\IOSelector.cs" />

+    <Compile Include="System\MonoToolsLocator.cs" />

     <Compile Include="System\Platform.cs" />

     <Compile Include="System\SRDescriptionAttribute.cs" />

     <Compile Include="System\UriTypeConverter.cs" />
  </ItemGroup>

diff --git a/mcs/class/System/System-net_4_x.csproj b/mcs/class/System/System-net_4_x.csproj
index bd89dd5b286..18e13c0350d 100644
--- a/mcs/class/System/System-net_4_x.csproj
+++ b/mcs/class/System/System-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;SECURITY_DEP;XML_DEP;MONO_SECURITY_ALIAS;CONFIGURATION_DEP</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;SECURITY_DEP;XML_DEP;MONO_SECURITY_ALIAS;CONFIGURATION_DEP</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;SECURITY_DEP;XML_DEP;MONO_SECURITY_ALIAS;CONFIGURATION_DEP</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;SECURITY_DEP;XML_DEP;MONO_SECURITY_ALIAS;CONFIGURATION_DEP</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -504,6 +504,7 @@
     <Compile Include="..\referencesource\System\net\System\Net\_ProxyChain.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_ScatterGatherBuffers.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_Semaphore.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\_ServiceNameStore.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_TimerThread.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_WebProxyDataBuilder.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\AuthenticationScheme.cs" />

@@ -610,7 +611,6 @@
     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemMulticastIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemTcpConnection.cs" />

-    <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemUnicastIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpConnection.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpState.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpStatistics.cs" />

@@ -633,6 +633,7 @@
     <Compile Include="..\referencesource\System\net\System\Net\Sockets\ProtocolFamily.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\ProtocolType.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SelectMode.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\Socket.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketErrors.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketFlags.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketInformation.cs" />

@@ -641,7 +642,10 @@
     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketOptionName.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketShutdown.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketType.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\TCPClient.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\TCPListener.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\TransmitFileFlags.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\UDPClient.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\UdpReceiveResult.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\TransportContext.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\TransportType.cs" />

@@ -693,19 +697,23 @@
     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexRunnerFactory.cs" />

     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexTree.cs" />

     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexWriter.cs" />

+    <Compile Include="..\referencesource\System\security\system\security\Authentication\ExtendedProtection\ServiceNameCollection.cs" />

     <Compile Include="..\referencesource\System\security\system\security\Authentication\ExtendedProtection\TokenBinding.cs" />

     <Compile Include="..\referencesource\System\security\system\security\cryptography\oid.cs" />

     <Compile Include="..\referencesource\System\security\system\security\cryptography\x509\x509utils.cs" />

     <Compile Include="..\referencesource\System\security\system\security\permissions\typedescriptorpermission.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\AsyncStreamReader.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\Process.cs" />

+    <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessModuleCollection.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessStartInfo.cs" />

+    <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessThreadCollection.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\processwaithandle.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\ElapsedEventHandler.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\Timer.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\TimersDescriptionAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\collections\concurrent\BlockingCollection.cs" />

     <Compile Include="..\referencesource\System\sys\system\collections\concurrent\ConcurrentBag.cs" />

+    <Compile Include="..\referencesource\System\sys\system\Diagnostics\CodeAnalysis\ExcludeFromCodeCoverageAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\IO\ports\InternalResources.cs" />

     <Compile Include="..\referencesource\System\sys\system\runtime\interopservices\DefaultParameterValueAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\runtime\interopservices\handlecollector.cs" />

@@ -720,6 +728,7 @@
     <Compile Include="Microsoft.VisualBasic\VBCodeCompiler.cs" />

     <Compile Include="Microsoft.VisualBasic\VBCodeGenerator.cs" />

     <Compile Include="Microsoft.VisualBasic\VBCodeProvider.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeX509ChainHandle.cs" />

     <Compile Include="Microsoft.Win32\IntranetZoneCredentialPolicy.cs" />

     <Compile Include="Microsoft.Win32\PowerModeChangedEventArgs.cs" />

     <Compile Include="Microsoft.Win32\PowerModeChangedEventHandler.cs" />

@@ -740,6 +749,44 @@
     <Compile Include="Microsoft.Win32\UserPreferenceChangedEventHandler.cs" />

     <Compile Include="Microsoft.Win32\UserPreferenceChangingEventArgs.cs" />

     <Compile Include="Microsoft.Win32\UserPreferenceChangingEventHandler.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsBio.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsContext.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsError.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsException.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsKey.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsObject.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsPkcs12.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsProvider.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSsl.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSslCtx.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSslError.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsStream.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsUtils.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Chain.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Crl.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Error.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Exception.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509FileType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Format.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Lookup.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupMono.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupMonoCollection.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Name.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509NameEntryType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509NameList.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Purpose.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Revoked.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Store.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreCtx.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreManager.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509TrustKind.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509VerifyFlags.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509VerifyParam.cs" />

+    <Compile Include="Mono.Btls\X509CertificateImplBtls.cs" />

+    <Compile Include="Mono.Btls\X509ChainImplBtls.cs" />

     <Compile Include="Mono.Http\NtlmClient.cs" />

     <Compile Include="Mono.Net.Dns\DnsClass.cs" />

     <Compile Include="Mono.Net.Dns\DnsHeader.cs" />

@@ -763,12 +810,15 @@
     <Compile Include="Mono.Net.Dns\ResolverError.cs" />

     <Compile Include="Mono.Net.Dns\SimpleResolver.cs" />

     <Compile Include="Mono.Net.Dns\SimpleResolverEventArgs.cs" />

+    <Compile Include="Mono.Net.Security\AsyncProtocolRequest.cs" />

     <Compile Include="Mono.Net.Security\CallbackHelpers.cs" />

     <Compile Include="Mono.Net.Security\ChainValidationHelper.cs" />

     <Compile Include="Mono.Net.Security\IMonoSslStream.cs" />

     <Compile Include="Mono.Net.Security\IMonoTlsProvider.cs" />

     <Compile Include="Mono.Net.Security\LegacySslStream.cs" />

-    <Compile Include="Mono.Net.Security\MonoDefaultTlsProvider.cs" />

+    <Compile Include="Mono.Net.Security\LegacyTlsProvider.cs" />

+    <Compile Include="Mono.Net.Security\MobileAuthenticatedStream.cs" />

+    <Compile Include="Mono.Net.Security\MobileTlsContext.cs" />

     <Compile Include="Mono.Net.Security\MonoSslStreamImpl.cs" />

     <Compile Include="Mono.Net.Security\MonoSslStreamWrapper.cs" />

     <Compile Include="Mono.Net.Security\MonoTlsProviderFactory.cs" />

@@ -784,6 +834,7 @@
     <Compile Include="ReferenceSources\EnvironmentHelpers.cs" />

     <Compile Include="ReferenceSources\HttpApi.cs" />

     <Compile Include="ReferenceSources\HttpSysSettings.cs" />

+    <Compile Include="ReferenceSources\LocalAppContextSwitches.cs" />

     <Compile Include="ReferenceSources\Logging.cs" />

     <Compile Include="ReferenceSources\NativeMethods.cs" />

     <Compile Include="ReferenceSources\RequestCacheProtocol.cs" />

@@ -865,7 +916,6 @@
     <Compile Include="System.Configuration\UriSection.cs" />

     <Compile Include="System.Configuration\UserScopedSettingAttribute.cs" />

     <Compile Include="System.Configuration\UserSettingsGroup.cs" />

-    <Compile Include="System.Diagnostics.CodeAnalysis\ExcludeFromCodeCoverageAttribute.cs" />

     <Compile Include="System.Diagnostics\AlphabeticalEnumConverter.cs" />

     <Compile Include="System.Diagnostics\CounterCreationData.cs" />

     <Compile Include="System.Diagnostics\CounterCreationDataCollection.cs" />

@@ -914,11 +964,9 @@
     <Compile Include="System.Diagnostics\PerformanceCounterType.cs" />

     <Compile Include="System.Diagnostics\Process.cs" />

     <Compile Include="System.Diagnostics\ProcessModule.cs" />

-    <Compile Include="System.Diagnostics\ProcessModuleCollection.cs" />

     <Compile Include="System.Diagnostics\ProcessPriorityClass.cs" />

     <Compile Include="System.Diagnostics\ProcessStartInfo.cs" />

     <Compile Include="System.Diagnostics\ProcessThread.cs" />

-    <Compile Include="System.Diagnostics\ProcessThreadCollection.cs" />

     <Compile Include="System.Diagnostics\ProcessWindowStyle.cs" />

     <Compile Include="System.Diagnostics\Stopwatch.cs" />

     <Compile Include="System.Diagnostics\ThreadPriorityLevel.cs" />

@@ -1057,15 +1105,10 @@
     <Compile Include="System.Net.Security\SslPolicyErrors.cs" />

     <Compile Include="System.Net.Security\SslStream.cs" />

     <Compile Include="System.Net.Sockets\SafeSocketHandle.cs" />

-    <Compile Include="System.Net.Sockets\SendPacketsElement.cs" />

     <Compile Include="System.Net.Sockets\Socket.cs" />

     <Compile Include="System.Net.Sockets\SocketAsyncEventArgs.cs" />

-    <Compile Include="System.Net.Sockets\SocketAsyncOperation.cs" />

     <Compile Include="System.Net.Sockets\SocketAsyncResult.cs" />

     <Compile Include="System.Net.Sockets\SocketOperation.cs" />

-    <Compile Include="System.Net.Sockets\TcpClient.cs" />

-    <Compile Include="System.Net.Sockets\TcpListener.cs" />

-    <Compile Include="System.Net.Sockets\UdpClient.cs" />

     <Compile Include="System.Net.WebSockets\ClientWebSocket.cs" />

     <Compile Include="System.Net.WebSockets\ClientWebSocketOptions.cs" />

     <Compile Include="System.Net.WebSockets\HttpListenerWebSocketContext.cs" />

@@ -1105,6 +1148,7 @@
     <Compile Include="System.Net\HttpListenerPrefixCollection.cs" />

     <Compile Include="System.Net\HttpListenerRequest.cs" />

     <Compile Include="System.Net\HttpListenerResponse.cs" />

+    <Compile Include="System.Net\HttpListenerResponseHelper.cs" />

     <Compile Include="System.Net\HttpListenerTimeoutManager.cs" />

     <Compile Include="System.Net\HttpRequestCreator.cs" />

     <Compile Include="System.Net\HttpStreamAsyncResult.cs" />

@@ -1160,7 +1204,6 @@
     <Compile Include="System.Security.Authentication.ExtendedProtection\ExtendedProtectionPolicyTypeConverter.cs" />

     <Compile Include="System.Security.Authentication.ExtendedProtection\PolicyEnforcement.cs" />

     <Compile Include="System.Security.Authentication.ExtendedProtection\ProtectionScenario.cs" />

-    <Compile Include="System.Security.Authentication.ExtendedProtection\ServiceNameCollection.cs" />

     <Compile Include="System.Security.Authentication\AuthenticationException.cs" />

     <Compile Include="System.Security.Authentication\CipherAlgorithmType.cs" />

     <Compile Include="System.Security.Authentication\ExchangeAlgorithmType.cs" />

@@ -1181,6 +1224,7 @@
     <Compile Include="System.Security.Cryptography.X509Certificates\X509Certificate2Impl.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509Certificate2ImplMono.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509CertificateCollection.cs" />

+    <Compile Include="System.Security.Cryptography.X509Certificates\X509CertificateImplCollection.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509Chain.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509ChainElement.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509ChainElementCollection.cs" />

@@ -1223,6 +1267,7 @@
     <Compile Include="System.Web\AspNetHostingPermissionLevel.cs" />

     <Compile Include="System.Windows.Input\ICommand.cs" />

     <Compile Include="System\IOSelector.cs" />

+    <Compile Include="System\MonoToolsLocator.cs" />

     <Compile Include="System\Platform.cs" />

     <Compile Include="System\SRDescriptionAttribute.cs" />

     <Compile Include="System\UriTypeConverter.cs" />
  </ItemGroup>

diff --git a/mcs/class/System/System-secxml-net_4_x.csproj b/mcs/class/System/System-secxml-net_4_x.csproj
index 29567cd320b..d128c82605b 100644
--- a/mcs/class/System/System-secxml-net_4_x.csproj
+++ b/mcs/class/System/System-secxml-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;SECURITY_DEP;XML_DEP;MONO_SECURITY_ALIAS</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;SECURITY_DEP;XML_DEP;MONO_SECURITY_ALIAS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699,618</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;SECURITY_DEP;XML_DEP;MONO_SECURITY_ALIAS</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;CONFIGURATION_2_0;FEATURE_PAL;SYSTEM_NAMESPACE;MONO;PLATFORM_UNIX;MONO_FEATURE_PROCESS_START;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;SECURITY_DEP;XML_DEP;MONO_SECURITY_ALIAS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -504,6 +504,7 @@
     <Compile Include="..\referencesource\System\net\System\Net\_ProxyChain.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_ScatterGatherBuffers.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_Semaphore.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\_ServiceNameStore.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_TimerThread.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\_WebProxyDataBuilder.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\AuthenticationScheme.cs" />

@@ -610,7 +611,6 @@
     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemMulticastIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemTcpConnection.cs" />

-    <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\SystemUnicastIPAddressInformation.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpConnection.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpState.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\NetworkInformation\TcpStatistics.cs" />

@@ -633,6 +633,7 @@
     <Compile Include="..\referencesource\System\net\System\Net\Sockets\ProtocolFamily.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\ProtocolType.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SelectMode.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\Socket.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketErrors.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketFlags.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketInformation.cs" />

@@ -641,7 +642,10 @@
     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketOptionName.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketShutdown.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\SocketType.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\TCPClient.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\TCPListener.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\TransmitFileFlags.cs" />

+    <Compile Include="..\referencesource\System\net\System\Net\Sockets\UDPClient.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\Sockets\UdpReceiveResult.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\TransportContext.cs" />

     <Compile Include="..\referencesource\System\net\System\Net\TransportType.cs" />

@@ -693,19 +697,23 @@
     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexRunnerFactory.cs" />

     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexTree.cs" />

     <Compile Include="..\referencesource\System\regex\system\text\regularexpressions\RegexWriter.cs" />

+    <Compile Include="..\referencesource\System\security\system\security\Authentication\ExtendedProtection\ServiceNameCollection.cs" />

     <Compile Include="..\referencesource\System\security\system\security\Authentication\ExtendedProtection\TokenBinding.cs" />

     <Compile Include="..\referencesource\System\security\system\security\cryptography\oid.cs" />

     <Compile Include="..\referencesource\System\security\system\security\cryptography\x509\x509utils.cs" />

     <Compile Include="..\referencesource\System\security\system\security\permissions\typedescriptorpermission.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\AsyncStreamReader.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\Process.cs" />

+    <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessModuleCollection.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessStartInfo.cs" />

+    <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\ProcessThreadCollection.cs" />

     <Compile Include="..\referencesource\System\services\monitoring\system\diagnosticts\processwaithandle.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\ElapsedEventHandler.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\Timer.cs" />

     <Compile Include="..\referencesource\System\services\timers\system\timers\TimersDescriptionAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\collections\concurrent\BlockingCollection.cs" />

     <Compile Include="..\referencesource\System\sys\system\collections\concurrent\ConcurrentBag.cs" />

+    <Compile Include="..\referencesource\System\sys\system\Diagnostics\CodeAnalysis\ExcludeFromCodeCoverageAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\IO\ports\InternalResources.cs" />

     <Compile Include="..\referencesource\System\sys\system\runtime\interopservices\DefaultParameterValueAttribute.cs" />

     <Compile Include="..\referencesource\System\sys\system\runtime\interopservices\handlecollector.cs" />

@@ -720,6 +728,7 @@
     <Compile Include="Microsoft.VisualBasic\VBCodeCompiler.cs" />

     <Compile Include="Microsoft.VisualBasic\VBCodeGenerator.cs" />

     <Compile Include="Microsoft.VisualBasic\VBCodeProvider.cs" />

+    <Compile Include="Microsoft.Win32.SafeHandles\SafeX509ChainHandle.cs" />

     <Compile Include="Microsoft.Win32\IntranetZoneCredentialPolicy.cs" />

     <Compile Include="Microsoft.Win32\PowerModeChangedEventArgs.cs" />

     <Compile Include="Microsoft.Win32\PowerModeChangedEventHandler.cs" />

@@ -740,6 +749,44 @@
     <Compile Include="Microsoft.Win32\UserPreferenceChangedEventHandler.cs" />

     <Compile Include="Microsoft.Win32\UserPreferenceChangingEventArgs.cs" />

     <Compile Include="Microsoft.Win32\UserPreferenceChangingEventHandler.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsBio.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsContext.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsError.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsException.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsKey.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsObject.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsPkcs12.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsProvider.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSsl.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSslCtx.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsSslError.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsStream.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsUtils.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Chain.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Crl.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Error.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Exception.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509FileType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Format.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Lookup.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupMono.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupMonoCollection.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509LookupType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Name.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509NameEntryType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509NameList.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Purpose.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Revoked.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509Store.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreCtx.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreManager.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509StoreType.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509TrustKind.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509VerifyFlags.cs" />

+    <Compile Include="Mono.Btls\MonoBtlsX509VerifyParam.cs" />

+    <Compile Include="Mono.Btls\X509CertificateImplBtls.cs" />

+    <Compile Include="Mono.Btls\X509ChainImplBtls.cs" />

     <Compile Include="Mono.Http\NtlmClient.cs" />

     <Compile Include="Mono.Net.Dns\DnsClass.cs" />

     <Compile Include="Mono.Net.Dns\DnsHeader.cs" />

@@ -763,12 +810,15 @@
     <Compile Include="Mono.Net.Dns\ResolverError.cs" />

     <Compile Include="Mono.Net.Dns\SimpleResolver.cs" />

     <Compile Include="Mono.Net.Dns\SimpleResolverEventArgs.cs" />

+    <Compile Include="Mono.Net.Security\AsyncProtocolRequest.cs" />

     <Compile Include="Mono.Net.Security\CallbackHelpers.cs" />

     <Compile Include="Mono.Net.Security\ChainValidationHelper.cs" />

     <Compile Include="Mono.Net.Security\IMonoSslStream.cs" />

     <Compile Include="Mono.Net.Security\IMonoTlsProvider.cs" />

     <Compile Include="Mono.Net.Security\LegacySslStream.cs" />

-    <Compile Include="Mono.Net.Security\MonoDefaultTlsProvider.cs" />

+    <Compile Include="Mono.Net.Security\LegacyTlsProvider.cs" />

+    <Compile Include="Mono.Net.Security\MobileAuthenticatedStream.cs" />

+    <Compile Include="Mono.Net.Security\MobileTlsContext.cs" />

     <Compile Include="Mono.Net.Security\MonoSslStreamImpl.cs" />

     <Compile Include="Mono.Net.Security\MonoSslStreamWrapper.cs" />

     <Compile Include="Mono.Net.Security\MonoTlsProviderFactory.cs" />

@@ -776,9 +826,6 @@
     <Compile Include="Mono.Net.Security\MonoTlsStream.cs" />

     <Compile Include="Mono.Net.Security\NoReflectionHelper.cs" />

     <Compile Include="Mono.Net.Security\SystemCertificateValidator.cs" />

-    <Compile Include="ReferenceSources\_SecureChannel.cs" />

-    <Compile Include="ReferenceSources\_SslState.cs" />

-    <Compile Include="ReferenceSources\_SslStream.cs" />

     <Compile Include="ReferenceSources\AssertWrapper.cs" />

     <Compile Include="ReferenceSources\AutoWebProxyScriptEngine.cs" />

     <Compile Include="ReferenceSources\BinaryCompatibility.cs" />

@@ -787,7 +834,7 @@
     <Compile Include="ReferenceSources\EnvironmentHelpers.cs" />

     <Compile Include="ReferenceSources\HttpApi.cs" />

     <Compile Include="ReferenceSources\HttpSysSettings.cs" />

-    <Compile Include="ReferenceSources\Internal.cs" />

+    <Compile Include="ReferenceSources\LocalAppContextSwitches.cs" />

     <Compile Include="ReferenceSources\Logging.cs" />

     <Compile Include="ReferenceSources\NativeMethods.cs" />

     <Compile Include="ReferenceSources\RequestCacheProtocol.cs" />

@@ -796,10 +843,6 @@
     <Compile Include="ReferenceSources\SR.cs" />

     <Compile Include="ReferenceSources\SR2.cs" />

     <Compile Include="ReferenceSources\SRCategoryAttribute.cs" />

-    <Compile Include="ReferenceSources\SslStream.cs" />

-    <Compile Include="ReferenceSources\SSPIConfiguration.cs" />

-    <Compile Include="ReferenceSources\SSPISafeHandles.cs" />

-    <Compile Include="ReferenceSources\SSPIWrapper.cs" />

     <Compile Include="ReferenceSources\Win32Exception.cs" />

     <Compile Include="System.CodeDom.Compiler\CodeCompiler.cs" />

     <Compile Include="System.CodeDom.Compiler\CodeDomConfigurationHandler.cs" />

@@ -873,7 +916,6 @@
     <Compile Include="System.Configuration\UriSection.cs" />

     <Compile Include="System.Configuration\UserScopedSettingAttribute.cs" />

     <Compile Include="System.Configuration\UserSettingsGroup.cs" />

-    <Compile Include="System.Diagnostics.CodeAnalysis\ExcludeFromCodeCoverageAttribute.cs" />

     <Compile Include="System.Diagnostics\AlphabeticalEnumConverter.cs" />

     <Compile Include="System.Diagnostics\CounterCreationData.cs" />

     <Compile Include="System.Diagnostics\CounterCreationDataCollection.cs" />

@@ -922,11 +964,9 @@
     <Compile Include="System.Diagnostics\PerformanceCounterType.cs" />

     <Compile Include="System.Diagnostics\Process.cs" />

     <Compile Include="System.Diagnostics\ProcessModule.cs" />

-    <Compile Include="System.Diagnostics\ProcessModuleCollection.cs" />

     <Compile Include="System.Diagnostics\ProcessPriorityClass.cs" />

     <Compile Include="System.Diagnostics\ProcessStartInfo.cs" />

     <Compile Include="System.Diagnostics\ProcessThread.cs" />

-    <Compile Include="System.Diagnostics\ProcessThreadCollection.cs" />

     <Compile Include="System.Diagnostics\ProcessWindowStyle.cs" />

     <Compile Include="System.Diagnostics\Stopwatch.cs" />

     <Compile Include="System.Diagnostics\ThreadPriorityLevel.cs" />

@@ -1065,15 +1105,10 @@
     <Compile Include="System.Net.Security\SslPolicyErrors.cs" />

     <Compile Include="System.Net.Security\SslStream.cs" />

     <Compile Include="System.Net.Sockets\SafeSocketHandle.cs" />

-    <Compile Include="System.Net.Sockets\SendPacketsElement.cs" />

     <Compile Include="System.Net.Sockets\Socket.cs" />

     <Compile Include="System.Net.Sockets\SocketAsyncEventArgs.cs" />

-    <Compile Include="System.Net.Sockets\SocketAsyncOperation.cs" />

     <Compile Include="System.Net.Sockets\SocketAsyncResult.cs" />

     <Compile Include="System.Net.Sockets\SocketOperation.cs" />

-    <Compile Include="System.Net.Sockets\TcpClient.cs" />

-    <Compile Include="System.Net.Sockets\TcpListener.cs" />

-    <Compile Include="System.Net.Sockets\UdpClient.cs" />

     <Compile Include="System.Net.WebSockets\ClientWebSocket.cs" />

     <Compile Include="System.Net.WebSockets\ClientWebSocketOptions.cs" />

     <Compile Include="System.Net.WebSockets\HttpListenerWebSocketContext.cs" />

@@ -1113,6 +1148,7 @@
     <Compile Include="System.Net\HttpListenerPrefixCollection.cs" />

     <Compile Include="System.Net\HttpListenerRequest.cs" />

     <Compile Include="System.Net\HttpListenerResponse.cs" />

+    <Compile Include="System.Net\HttpListenerResponseHelper.cs" />

     <Compile Include="System.Net\HttpListenerTimeoutManager.cs" />

     <Compile Include="System.Net\HttpRequestCreator.cs" />

     <Compile Include="System.Net\HttpStreamAsyncResult.cs" />

@@ -1168,7 +1204,6 @@
     <Compile Include="System.Security.Authentication.ExtendedProtection\ExtendedProtectionPolicyTypeConverter.cs" />

     <Compile Include="System.Security.Authentication.ExtendedProtection\PolicyEnforcement.cs" />

     <Compile Include="System.Security.Authentication.ExtendedProtection\ProtectionScenario.cs" />

-    <Compile Include="System.Security.Authentication.ExtendedProtection\ServiceNameCollection.cs" />

     <Compile Include="System.Security.Authentication\AuthenticationException.cs" />

     <Compile Include="System.Security.Authentication\CipherAlgorithmType.cs" />

     <Compile Include="System.Security.Authentication\ExchangeAlgorithmType.cs" />

@@ -1189,6 +1224,7 @@
     <Compile Include="System.Security.Cryptography.X509Certificates\X509Certificate2Impl.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509Certificate2ImplMono.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509CertificateCollection.cs" />

+    <Compile Include="System.Security.Cryptography.X509Certificates\X509CertificateImplCollection.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509Chain.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509ChainElement.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509ChainElementCollection.cs" />

@@ -1231,6 +1267,7 @@
     <Compile Include="System.Web\AspNetHostingPermissionLevel.cs" />

     <Compile Include="System.Windows.Input\ICommand.cs" />

     <Compile Include="System\IOSelector.cs" />

+    <Compile Include="System\MonoToolsLocator.cs" />

     <Compile Include="System\Platform.cs" />

     <Compile Include="System\SRDescriptionAttribute.cs" />

     <Compile Include="System\UriTypeConverter.cs" />
  </ItemGroup>

diff --git a/mcs/class/SystemWebTestShim/SystemWebTestShim-net_4_x.csproj b/mcs/class/SystemWebTestShim/SystemWebTestShim-net_4_x.csproj
index cff36539f3b..4b3ee173ef9 100644
--- a/mcs/class/SystemWebTestShim/SystemWebTestShim-net_4_x.csproj
+++ b/mcs/class/SystemWebTestShim/SystemWebTestShim-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/WebMatrix.Data/WebMatrix.Data-net_4_x.csproj b/mcs/class/WebMatrix.Data/WebMatrix.Data-net_4_x.csproj
index ed37cbc38ad..7eea4a2bc95 100644
--- a/mcs/class/WebMatrix.Data/WebMatrix.Data-net_4_x.csproj
+++ b/mcs/class/WebMatrix.Data/WebMatrix.Data-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

diff --git a/mcs/class/WindowsBase/WindowsBase-net_4_x.csproj b/mcs/class/WindowsBase/WindowsBase-net_4_x.csproj
index 5ac7164723c..6b9b6e376a6 100644
--- a/mcs/class/WindowsBase/WindowsBase-net_4_x.csproj
+++ b/mcs/class/WindowsBase/WindowsBase-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -236,6 +236,7 @@
     <Compile Include="System.Windows\WeakEventManager.cs" />

     <Compile Include="ZipSharp\IOFunctions.cs" />

     <Compile Include="ZipSharp\NativeUnzip.cs" />

+    <Compile Include="ZipSharp\NativeVersion.cs" />

     <Compile Include="ZipSharp\NativeZip.cs" />

     <Compile Include="ZipSharp\UnzipArchive.cs" />

     <Compile Include="ZipSharp\UnzipFileInfo.cs" />

diff --git a/mcs/class/corlib/corlib-net_4_x.csproj b/mcs/class/corlib/corlib-net_4_x.csproj
index 80bce2dd720..6dd48b8cade 100644
--- a/mcs/class/corlib/corlib-net_4_x.csproj
+++ b/mcs/class/corlib/corlib-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>612,618,1635,1699</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;INSIDE_CORLIB;MONO_CULTURE_DATA;LIBC;FEATURE_PAL;GENERICS_WORK;FEATURE_LIST_PREDICATES;FEATURE_SERIALIZATION;FEATURE_ASCII;FEATURE_LATIN1;FEATURE_UTF7;FEATURE_UTF32;MONO_HYBRID_ENCODING_SUPPORT;FEATURE_ASYNC_IO;NEW_EXPERIMENTAL_ASYNC_IO;FEATURE_UTF32;FEATURE_EXCEPTIONDISPATCHINFO;FEATURE_CORRUPTING_EXCEPTIONS;FEATURE_EXCEPTION_NOTIFICATIONS;FEATURE_STRONGNAME_MIGRATION;FEATURE_USE_LCID;FEATURE_FUSION;FEATURE_CRYPTO;FEATURE_X509_SECURESTRINGS;FEATURE_SYNCHRONIZATIONCONTEXT;FEATURE_SYNCHRONIZATIONCONTEXT_WAIT;FEATURE_MACL;FEATURE_REMOTING;MONO_COM;FEATURE_COMINTEROP;FEATURE_ROLE_BASED_SECURITY;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;FEATURE_PAL;GENERICS_WORK;FEATURE_LIST_PREDICATES;FEATURE_SERIALIZATION;FEATURE_ASCII;FEATURE_LATIN1;FEATURE_UTF7;FEATURE_UTF32;MONO_HYBRID_ENCODING_SUPPORT;FEATURE_ASYNC_IO;NEW_EXPERIMENTAL_ASYNC_IO;FEATURE_UTF32;FEATURE_EXCEPTIONDISPATCHINFO;FEATURE_CORRUPTING_EXCEPTIONS;FEATURE_EXCEPTION_NOTIFICATIONS;FEATURE_STRONGNAME_MIGRATION;FEATURE_USE_LCID;FEATURE_FUSION;FEATURE_CRYPTO;FEATURE_X509_SECURESTRINGS;FEATURE_SYNCHRONIZATIONCONTEXT;FEATURE_SYNCHRONIZATIONCONTEXT_WAIT;FEATURE_MACL;FEATURE_REMOTING;MONO_COM;FEATURE_COMINTEROP;FEATURE_ROLE_BASED_SECURITY;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

+    <DefineConstants>TRACE;INSIDE_CORLIB;MONO_CULTURE_DATA;LIBC;FEATURE_PAL;GENERICS_WORK;FEATURE_LIST_PREDICATES;FEATURE_SERIALIZATION;FEATURE_ASCII;FEATURE_LATIN1;FEATURE_UTF7;FEATURE_UTF32;MONO_HYBRID_ENCODING_SUPPORT;FEATURE_ASYNC_IO;NEW_EXPERIMENTAL_ASYNC_IO;FEATURE_UTF32;FEATURE_EXCEPTIONDISPATCHINFO;FEATURE_CORRUPTING_EXCEPTIONS;FEATURE_EXCEPTION_NOTIFICATIONS;FEATURE_STRONGNAME_MIGRATION;FEATURE_USE_LCID;FEATURE_FUSION;FEATURE_CRYPTO;FEATURE_X509_SECURESTRINGS;FEATURE_SYNCHRONIZATIONCONTEXT;FEATURE_SYNCHRONIZATIONCONTEXT_WAIT;HAS_CORLIB_CONTRACTS;FEATURE_MACL;FEATURE_REMOTING;MONO_COM;FEATURE_COMINTEROP;FEATURE_ROLE_BASED_SECURITY;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_PAL;GENERICS_WORK;FEATURE_LIST_PREDICATES;FEATURE_SERIALIZATION;FEATURE_ASCII;FEATURE_LATIN1;FEATURE_UTF7;FEATURE_UTF32;MONO_HYBRID_ENCODING_SUPPORT;FEATURE_ASYNC_IO;NEW_EXPERIMENTAL_ASYNC_IO;FEATURE_UTF32;FEATURE_EXCEPTIONDISPATCHINFO;FEATURE_CORRUPTING_EXCEPTIONS;FEATURE_EXCEPTION_NOTIFICATIONS;FEATURE_STRONGNAME_MIGRATION;FEATURE_USE_LCID;FEATURE_FUSION;FEATURE_CRYPTO;FEATURE_X509_SECURESTRINGS;FEATURE_SYNCHRONIZATIONCONTEXT;FEATURE_SYNCHRONIZATIONCONTEXT_WAIT;HAS_CORLIB_CONTRACTS;FEATURE_MACL;FEATURE_REMOTING;MONO_COM;FEATURE_COMINTEROP;FEATURE_ROLE_BASED_SECURITY;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>612,618,1635,1699</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>INSIDE_CORLIB;MONO_CULTURE_DATA;LIBC;FEATURE_PAL;GENERICS_WORK;FEATURE_LIST_PREDICATES;FEATURE_SERIALIZATION;FEATURE_ASCII;FEATURE_LATIN1;FEATURE_UTF7;FEATURE_UTF32;MONO_HYBRID_ENCODING_SUPPORT;FEATURE_ASYNC_IO;NEW_EXPERIMENTAL_ASYNC_IO;FEATURE_UTF32;FEATURE_EXCEPTIONDISPATCHINFO;FEATURE_CORRUPTING_EXCEPTIONS;FEATURE_EXCEPTION_NOTIFICATIONS;FEATURE_STRONGNAME_MIGRATION;FEATURE_USE_LCID;FEATURE_FUSION;FEATURE_CRYPTO;FEATURE_X509_SECURESTRINGS;FEATURE_SYNCHRONIZATIONCONTEXT;FEATURE_SYNCHRONIZATIONCONTEXT_WAIT;FEATURE_MACL;FEATURE_REMOTING;MONO_COM;FEATURE_COMINTEROP;FEATURE_ROLE_BASED_SECURITY;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE;FEATURE_PAL;GENERICS_WORK;FEATURE_LIST_PREDICATES;FEATURE_SERIALIZATION;FEATURE_ASCII;FEATURE_LATIN1;FEATURE_UTF7;FEATURE_UTF32;MONO_HYBRID_ENCODING_SUPPORT;FEATURE_ASYNC_IO;NEW_EXPERIMENTAL_ASYNC_IO;FEATURE_UTF32;FEATURE_EXCEPTIONDISPATCHINFO;FEATURE_CORRUPTING_EXCEPTIONS;FEATURE_EXCEPTION_NOTIFICATIONS;FEATURE_STRONGNAME_MIGRATION;FEATURE_USE_LCID;FEATURE_FUSION;FEATURE_CRYPTO;FEATURE_X509_SECURESTRINGS;FEATURE_SYNCHRONIZATIONCONTEXT;FEATURE_SYNCHRONIZATIONCONTEXT_WAIT;FEATURE_MACL;FEATURE_REMOTING;MONO_COM;FEATURE_COMINTEROP;FEATURE_ROLE_BASED_SECURITY;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

+    <DefineConstants>INSIDE_CORLIB;MONO_CULTURE_DATA;LIBC;FEATURE_PAL;GENERICS_WORK;FEATURE_LIST_PREDICATES;FEATURE_SERIALIZATION;FEATURE_ASCII;FEATURE_LATIN1;FEATURE_UTF7;FEATURE_UTF32;MONO_HYBRID_ENCODING_SUPPORT;FEATURE_ASYNC_IO;NEW_EXPERIMENTAL_ASYNC_IO;FEATURE_UTF32;FEATURE_EXCEPTIONDISPATCHINFO;FEATURE_CORRUPTING_EXCEPTIONS;FEATURE_EXCEPTION_NOTIFICATIONS;FEATURE_STRONGNAME_MIGRATION;FEATURE_USE_LCID;FEATURE_FUSION;FEATURE_CRYPTO;FEATURE_X509_SECURESTRINGS;FEATURE_SYNCHRONIZATIONCONTEXT;FEATURE_SYNCHRONIZATIONCONTEXT_WAIT;HAS_CORLIB_CONTRACTS;FEATURE_MACL;FEATURE_REMOTING;MONO_COM;FEATURE_COMINTEROP;FEATURE_ROLE_BASED_SECURITY;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS;NET_4_0;NET_4_5;NET_4_6;MONO;FEATURE_PAL;GENERICS_WORK;FEATURE_LIST_PREDICATES;FEATURE_SERIALIZATION;FEATURE_ASCII;FEATURE_LATIN1;FEATURE_UTF7;FEATURE_UTF32;MONO_HYBRID_ENCODING_SUPPORT;FEATURE_ASYNC_IO;NEW_EXPERIMENTAL_ASYNC_IO;FEATURE_UTF32;FEATURE_EXCEPTIONDISPATCHINFO;FEATURE_CORRUPTING_EXCEPTIONS;FEATURE_EXCEPTION_NOTIFICATIONS;FEATURE_STRONGNAME_MIGRATION;FEATURE_USE_LCID;FEATURE_FUSION;FEATURE_CRYPTO;FEATURE_X509_SECURESTRINGS;FEATURE_SYNCHRONIZATIONCONTEXT;FEATURE_SYNCHRONIZATIONCONTEXT_WAIT;HAS_CORLIB_CONTRACTS;FEATURE_MACL;FEATURE_REMOTING;MONO_COM;FEATURE_COMINTEROP;FEATURE_ROLE_BASED_SECURITY;MONO_FEATURE_THREAD_ABORT;MONO_FEATURE_THREAD_SUSPEND_RESUME;MONO_FEATURE_MULTIPLE_APPDOMAINS</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -48,6 +48,10 @@
   </PropertyGroup>

   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

   <ItemGroup>

+    <Compile Include="..\..\..\external\corefx\src\Common\src\System\Numerics\Hashing\HashHelpers.cs" />

+    <Compile Include="..\..\..\external\corefx\src\System.ValueTuple\src\System\Runtime\CompilerServices\TupleElementNamesAttribute.cs" />

+    <Compile Include="..\..\..\external\corefx\src\System.ValueTuple\src\System\ValueTuple\TupleExtensions.cs" />

+    <Compile Include="..\..\..\external\corefx\src\System.ValueTuple\src\System\ValueTuple\ValueTuple.cs" />

     <Compile Include="..\..\build\common\AssemblyRef.cs" />

     <Compile Include="..\..\build\common\Consts.cs" />

     <Compile Include="..\..\build\common\Locale.cs" />

@@ -218,6 +222,7 @@
     <Compile Include="..\referencesource\mscorlib\system\diagnostics\contracts\contractsbcl.cs" />

     <Compile Include="..\referencesource\mscorlib\system\diagnostics\debuggerattributes.cs" />

     <Compile Include="..\referencesource\mscorlib\system\diagnostics\eventing\eventactivityoptions.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\diagnostics\eventing\eventsourceexception.cs" />

     <Compile Include="..\referencesource\mscorlib\system\diagnostics\eventing\TraceLogging\EventSourceOptions.cs" />

     <Compile Include="..\referencesource\mscorlib\system\diagnostics\eventing\TraceLogging\TraceLoggingEventTraits.cs" />

     <Compile Include="..\referencesource\mscorlib\system\diagnostics\eventing\winmeta.cs" />

@@ -235,6 +240,8 @@
     <Compile Include="..\referencesource\mscorlib\system\fieldaccessexception.cs" />

     <Compile Include="..\referencesource\mscorlib\system\flagsattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\formatexception.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\FormattableString.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\gc.cs" />

     <Compile Include="..\referencesource\mscorlib\system\globalization\bidicategory.cs" />

     <Compile Include="..\referencesource\mscorlib\system\globalization\calendar.cs" />

     <Compile Include="..\referencesource\mscorlib\system\globalization\calendaralgorithmtype.cs" />

@@ -399,6 +406,9 @@
     <Compile Include="..\referencesource\mscorlib\system\reflection\reflectioncontext.cs" />

     <Compile Include="..\referencesource\mscorlib\system\reflection\resourceattributes.cs" />

     <Compile Include="..\referencesource\mscorlib\system\reflection\RuntimeReflectionExtensions.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\reflection\targetexception.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\reflection\targetinvocationexception.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\reflection\targetparametercountexception.cs" />

     <Compile Include="..\referencesource\mscorlib\system\reflection\typeattributes.cs" />

     <Compile Include="..\referencesource\mscorlib\system\reflection\typedelegator.cs" />

     <Compile Include="..\referencesource\mscorlib\system\reflection\typefilter.cs" />

@@ -442,10 +452,12 @@
     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\datetimeconstantattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\decimalconstantattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\decoratednameattribute.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\disableprivatereflectionattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\discardableattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\extensionattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\fixedaddressvaluetypeattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\fixedbufferattribute.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\FormattableStringFactory.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\hascopysemanticsattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\IAsyncStateMachine.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\compilerservices\idispatchconstantattribute.cs" />

@@ -585,7 +597,6 @@
     <Compile Include="..\referencesource\mscorlib\system\runtime\serialization\streamingcontext.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\serialization\surrogateselector.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\serialization\valuetypefixupinfo.cs" />

-    <Compile Include="..\referencesource\mscorlib\system\runtime\versioning\binarycompatibility.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\versioning\componentguaranteesattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\versioning\multitargetinghelpers.cs" />

     <Compile Include="..\referencesource\mscorlib\system\runtime\versioning\NonVersionableAttribute.cs" />

@@ -642,6 +653,7 @@
     <Compile Include="..\referencesource\mscorlib\system\security\cryptography\ripemd160.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\cryptography\ripemd160managed.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\cryptography\rsa.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\security\cryptography\rsacryptoserviceprovider.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\cryptography\RSAEncryptionPadding.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\cryptography\RSAEncryptionPaddingMode.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\cryptography\rsaoaepkeyexchangedeformatter.cs" />

@@ -665,6 +677,7 @@
     <Compile Include="..\referencesource\mscorlib\system\security\cryptography\utils.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\cryptography\x509certificates\x509utils.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\principal\genericidentity.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\security\safesecurityhandles.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\securitycontext.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\securitydocument.cs" />

     <Compile Include="..\referencesource\mscorlib\system\security\util\hex.cs" />

@@ -693,6 +706,7 @@
     <Compile Include="..\referencesource\mscorlib\system\text\encoderreplacementfallback.cs" />

     <Compile Include="..\referencesource\mscorlib\system\text\encoding.cs" />

     <Compile Include="..\referencesource\mscorlib\system\text\encodinginfo.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\text\encodingprovider.cs" />

     <Compile Include="..\referencesource\mscorlib\system\text\mlangcodepageencoding.cs" />

     <Compile Include="..\referencesource\mscorlib\system\text\stringbuilder.cs" />

     <Compile Include="..\referencesource\mscorlib\system\text\stringbuildercache.cs" />

@@ -704,12 +718,14 @@
     <Compile Include="..\referencesource\mscorlib\system\threadattributes.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\abandonedmutexexception.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\apartmentstate.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\threading\asynclocal.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\autoresetevent.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\CancellationToken.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\CancellationTokenRegistration.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\CancellationTokenSource.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\CountdownEvent.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\eventresetmode.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\threading\eventwaithandle.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\executioncontext.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\LazyInitializer.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\lockrecursionexception.cs" />

@@ -756,6 +772,7 @@
     <Compile Include="..\referencesource\mscorlib\system\threading\timeout.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\waithandle.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threading\waithandlecannotbeopenedexception.cs" />

+    <Compile Include="..\referencesource\mscorlib\system\threading\waithandleExtensions.cs" />

     <Compile Include="..\referencesource\mscorlib\system\threadstaticattribute.cs" />

     <Compile Include="..\referencesource\mscorlib\system\throwhelper.cs" />

     <Compile Include="..\referencesource\mscorlib\system\timeoutexception.cs" />

@@ -779,12 +796,7 @@
     <Compile Include="..\referencesource\mscorlib\system\unsafecharbuffer.cs" />

     <Compile Include="..\referencesource\mscorlib\system\version.cs" />

     <Compile Include="Assembly\AssemblyInfo.cs" />

-    <Compile Include="coreclr\AsyncLocal.cs" />

-    <Compile Include="coreclr\DisablePrivateReflectionAttribute.cs" />

-    <Compile Include="coreclr\EncodingProvider.cs" />

-    <Compile Include="coreclr\FormattableString.cs" />

-    <Compile Include="coreclr\FormattableStringFactory.cs" />

-    <Compile Include="coreclr\WaitHandleExtensions.cs" />

+    <Compile Include="corefx\SR.cs" />

     <Compile Include="Microsoft.Win32\IRegistryApi.cs" />

     <Compile Include="Microsoft.Win32\Registry.cs" />

     <Compile Include="Microsoft.Win32\RegistryHive.cs" />

@@ -817,11 +829,17 @@
     <Compile Include="Mono.Xml\SmallXmlParser.cs" />

     <Compile Include="Mono\DataConverter.cs" />

     <Compile Include="Mono\Runtime.cs" />

+    <Compile Include="Mono\RuntimeHandles.cs" />

+    <Compile Include="Mono\RuntimeMarshal.cs" />

+    <Compile Include="Mono\RuntimeStructs.cs" />

+    <Compile Include="Mono\SafeGPtrArrayHandle.cs" />

+    <Compile Include="Mono\SafeStringMarshal.cs" />

     <Compile Include="ReferenceSources\__ConsoleStream.cs" />

     <Compile Include="ReferenceSources\AppContextSwitches.cs" />

     <Compile Include="ReferenceSources\AppDomain.cs" />

     <Compile Include="ReferenceSources\Array.cs" />

     <Compile Include="ReferenceSources\BCLDebug.cs" />

+    <Compile Include="ReferenceSources\BinaryCompatibility.cs" />

     <Compile Include="ReferenceSources\Buffer.cs" />

     <Compile Include="ReferenceSources\CalendarData.cs" />

     <Compile Include="ReferenceSources\CLRConfig.cs" />

@@ -837,6 +855,7 @@
     <Compile Include="ReferenceSources\MethodBase.cs" />

     <Compile Include="ReferenceSources\NativeMethods.cs" />

     <Compile Include="ReferenceSources\ParseNumbers.cs" />

+    <Compile Include="ReferenceSources\PathInternal.cs" />

     <Compile Include="ReferenceSources\RemotingFieldCachedData.cs" />

     <Compile Include="ReferenceSources\RuntimeHandles.cs" />

     <Compile Include="ReferenceSources\RuntimeType.cs" />

@@ -845,7 +864,6 @@
     <Compile Include="ReferenceSources\String.cs" />

     <Compile Include="ReferenceSources\TextInfo.cs" />

     <Compile Include="ReferenceSources\Type.cs" />

-    <Compile Include="ReferenceSources\TypeBuilderInstantiation.cs" />

     <Compile Include="ReferenceSources\TypeNameParser.cs" />

     <Compile Include="ReferenceSources\win32native.cs" />

     <Compile Include="System.Configuration.Assemblies\AssemblyHash.cs" />

@@ -872,7 +890,13 @@
     <Compile Include="System.Diagnostics.Tracing\EventAttribute.cs" />

     <Compile Include="System.Diagnostics.Tracing\EventCommand.cs" />

     <Compile Include="System.Diagnostics.Tracing\EventCommandEventArgs.cs" />

+    <Compile Include="System.Diagnostics.Tracing\EventDataAttribute.cs" />

+    <Compile Include="System.Diagnostics.Tracing\EventFieldAttribute.cs" />

+    <Compile Include="System.Diagnostics.Tracing\EventFieldFormat.cs" />

+    <Compile Include="System.Diagnostics.Tracing\EventFieldTags.cs" />

+    <Compile Include="System.Diagnostics.Tracing\EventIgnoreAttribute.cs" />

     <Compile Include="System.Diagnostics.Tracing\EventListener.cs" />

+    <Compile Include="System.Diagnostics.Tracing\EventManifestOptions.cs" />

     <Compile Include="System.Diagnostics.Tracing\EventSource.cs" />

     <Compile Include="System.Diagnostics.Tracing\EventSourceAttribute.cs" />

     <Compile Include="System.Diagnostics.Tracing\EventSourceSettings.cs" />

@@ -919,30 +943,40 @@
     <Compile Include="System.IO\UnexceptionalStreamReader.cs" />

     <Compile Include="System.IO\UnexceptionalStreamWriter.cs" />

     <Compile Include="System.Reflection.Emit\AssemblyBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\AssemblyBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\AssemblyBuilderAccess.cs" />

     <Compile Include="System.Reflection.Emit\ConstructorBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\ConstructorBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\ConstructorOnTypeBuilderInst.cs" />

     <Compile Include="System.Reflection.Emit\CustomAttributeBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\CustomAttributeBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\DerivedTypes.cs" />

     <Compile Include="System.Reflection.Emit\DynamicILInfo.cs" />

     <Compile Include="System.Reflection.Emit\DynamicMethod.cs" />

     <Compile Include="System.Reflection.Emit\EnumBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\EnumBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\EventBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\EventBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\EventOnTypeBuilderInst.cs" />

     <Compile Include="System.Reflection.Emit\EventToken.cs" />

     <Compile Include="System.Reflection.Emit\FieldBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\FieldBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\FieldOnTypeBuilderInst.cs" />

     <Compile Include="System.Reflection.Emit\FieldToken.cs" />

     <Compile Include="System.Reflection.Emit\FlowControl.cs" />

     <Compile Include="System.Reflection.Emit\GenericTypeParameterBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\GenericTypeParameterBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\ILGenerator.cs" />

+    <Compile Include="System.Reflection.Emit\ILGenerator.pns.cs" />

     <Compile Include="System.Reflection.Emit\Label.cs" />

     <Compile Include="System.Reflection.Emit\LocalBuilder.cs" />

     <Compile Include="System.Reflection.Emit\MethodBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\MethodBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\MethodOnTypeBuilderInst.cs" />

     <Compile Include="System.Reflection.Emit\MethodRental.cs" />

     <Compile Include="System.Reflection.Emit\MethodToken.cs" />

     <Compile Include="System.Reflection.Emit\ModuleBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\ModuleBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\MonoArrayMethod.cs" />

     <Compile Include="System.Reflection.Emit\OpCode.cs" />

     <Compile Include="System.Reflection.Emit\OpCodeNames.cs" />

@@ -951,18 +985,24 @@
     <Compile Include="System.Reflection.Emit\OperandType.cs" />

     <Compile Include="System.Reflection.Emit\PackingSize.cs" />

     <Compile Include="System.Reflection.Emit\ParameterBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\ParameterBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\ParameterToken.cs" />

     <Compile Include="System.Reflection.Emit\PEFileKinds.cs" />

     <Compile Include="System.Reflection.Emit\PropertyBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\PropertyBuilder.pns.cs" />

     <Compile Include="System.Reflection.Emit\PropertyOnTypeBuilderInst.cs" />

     <Compile Include="System.Reflection.Emit\PropertyToken.cs" />

     <Compile Include="System.Reflection.Emit\SignatureHelper.cs" />

+    <Compile Include="System.Reflection.Emit\SignatureHelper.pns.cs" />

     <Compile Include="System.Reflection.Emit\SignatureToken.cs" />

     <Compile Include="System.Reflection.Emit\StackBehaviour.cs" />

     <Compile Include="System.Reflection.Emit\StringToken.cs" />

     <Compile Include="System.Reflection.Emit\TypeBuilder.cs" />

+    <Compile Include="System.Reflection.Emit\TypeBuilder.pns.cs" />

+    <Compile Include="System.Reflection.Emit\TypeBuilderInstantiation.cs" />

     <Compile Include="System.Reflection.Emit\TypeToken.cs" />

     <Compile Include="System.Reflection.Emit\UnmanagedMarshal.cs" />

+    <Compile Include="System.Reflection.Metadata\AssemblyExtensions.cs" />

     <Compile Include="System.Reflection\Assembly.cs" />

     <Compile Include="System.Reflection\AssemblyName.cs" />

     <Compile Include="System.Reflection\ConstructorInfo.cs" />

@@ -981,7 +1021,6 @@
     <Compile Include="System.Reflection\MonoAssembly.cs" />

     <Compile Include="System.Reflection\MonoEvent.cs" />

     <Compile Include="System.Reflection\MonoField.cs" />

-    <Compile Include="System.Reflection\MonoGenericClass.cs" />

     <Compile Include="System.Reflection\MonoMethod.cs" />

     <Compile Include="System.Reflection\MonoModule.cs" />

     <Compile Include="System.Reflection\MonoParameterInfo.cs" />

@@ -991,9 +1030,6 @@
     <Compile Include="System.Reflection\PropertyInfo.cs" />

     <Compile Include="System.Reflection\ReflectionTypeLoadException.cs" />

     <Compile Include="System.Reflection\StrongNameKeyPair.cs" />

-    <Compile Include="System.Reflection\TargetException.cs" />

-    <Compile Include="System.Reflection\TargetInvocationException.cs" />

-    <Compile Include="System.Reflection\TargetParameterCountException.cs" />

     <Compile Include="System.Resources\Win32Resources.cs" />

     <Compile Include="System.Runtime.CompilerServices\ConditionalWeakTable.cs" />

     <Compile Include="System.Runtime.CompilerServices\RuntimeHelpers.cs" />

@@ -1045,6 +1081,9 @@
     <Compile Include="System.Runtime.InteropServices\BIND_OPTS.cs" />

     <Compile Include="System.Runtime.InteropServices\BINDPTR.cs" />

     <Compile Include="System.Runtime.InteropServices\CALLCONV.cs" />

+    <Compile Include="System.Runtime.InteropServices\ComAwareEventInfo.cs" />

+    <Compile Include="System.Runtime.InteropServices\ComEventsHelper.cs" />

+    <Compile Include="System.Runtime.InteropServices\CustomQueryInterfaceMode.cs" />

     <Compile Include="System.Runtime.InteropServices\DESCKIND.cs" />

     <Compile Include="System.Runtime.InteropServices\DISPPARAMS.cs" />

     <Compile Include="System.Runtime.InteropServices\ELEMDESC.cs" />

@@ -1104,6 +1143,7 @@
     <Compile Include="System.Runtime.InteropServices\UCOMITypeLib.cs" />

     <Compile Include="System.Runtime.InteropServices\VARDESC.cs" />

     <Compile Include="System.Runtime.InteropServices\VARFLAGS.cs" />

+    <Compile Include="System.Runtime.Loader\AssemblyLoadContext.cs" />

     <Compile Include="System.Runtime.Remoting.Activation\ActivationServices.cs" />

     <Compile Include="System.Runtime.Remoting.Activation\ActivatorLevel.cs" />

     <Compile Include="System.Runtime.Remoting.Activation\AppDomainLevelActivator.cs" />

@@ -1362,9 +1402,9 @@
     <Compile Include="System.Security.Cryptography.X509Certificates\X509Helper.cs" />

     <Compile Include="System.Security.Cryptography.X509Certificates\X509KeyStorageFlags.cs" />

     <Compile Include="System.Security.Cryptography\CryptoAPITransform.cs" />

+    <Compile Include="System.Security.Cryptography\CryptoConfig.common.cs" />

     <Compile Include="System.Security.Cryptography\CryptoConfig.cs" />

     <Compile Include="System.Security.Cryptography\CryptoConfig.fullaot.cs" />

-    <Compile Include="System.Security.Cryptography\CryptoConfig_2_1.cs" />

     <Compile Include="System.Security.Cryptography\CspKeyContainerInfo.cs" />

     <Compile Include="System.Security.Cryptography\DESCryptoServiceProvider.cs" />

     <Compile Include="System.Security.Cryptography\DSACryptoServiceProvider.cs" />

@@ -1513,7 +1553,6 @@
     <Compile Include="System.Security\PermissionBuilder.cs" />

     <Compile Include="System.Security\PermissionSet.cs" />

     <Compile Include="System.Security\PolicyLevelType.cs" />

-    <Compile Include="System.Security\SafeAccessTokenHandle.cs" />

     <Compile Include="System.Security\SecureString.cs" />

     <Compile Include="System.Security\SecurityElement.cs" />

     <Compile Include="System.Security\SecurityException.cs" />

@@ -1529,7 +1568,6 @@
     <Compile Include="System.Text\NormalizationForm.cs" />

     <Compile Include="System.Threading.Tasks\DecoupledTask.cs" />

     <Compile Include="System.Threading\CompressedStack.cs" />

-    <Compile Include="System.Threading\EventWaitHandle.cs" />

     <Compile Include="System.Threading\HostExecutionContext.cs" />

     <Compile Include="System.Threading\HostExecutionContextManager.cs" />

     <Compile Include="System.Threading\Interlocked.cs" />

@@ -1572,9 +1610,6 @@
     <Compile Include="System\EmptyArray.cs" />

     <Compile Include="System\Environment.cs" />

     <Compile Include="System\EnvironmentVariableTarget.cs" />

-    <Compile Include="System\GC.cs" />

-    <Compile Include="System\GCCollectionMode.cs" />

-    <Compile Include="System\GCNotificationStatus.cs" />

     <Compile Include="System\Guid.cs" />

     <Compile Include="System\IConsoleDriver.cs" />

     <Compile Include="System\IntPtr.cs" />

diff --git a/mcs/class/legacy/Mono.Cecil/Mono.Cecil-net_4_x.csproj b/mcs/class/legacy/Mono.Cecil/Mono.Cecil-net_4_x.csproj
new file mode 100644
index 00000000000..a22a07e2db0
--- /dev/null
+++ b/mcs/class/legacy/Mono.Cecil/Mono.Cecil-net_4_x.csproj
@@ -0,0 +1,218 @@
+<?xml version="1.0" encoding="utf-8"?>

+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+  <PropertyGroup>

+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

+    <ProductVersion>9.0.30729</ProductVersion>

+    <SchemaVersion>2.0</SchemaVersion>

+    <ProjectGuid>{6DE38817-EC25-433A-AE58-0D30C5E6C460}</ProjectGuid>

+    <OutputType>Library</OutputType>

+    <NoWarn>1699,1699</NoWarn>

+    <OutputPath>./../../../class/lib/net_4_x/legacy</OutputPath>

+    <IntermediateOutputPath>obj-legacy</IntermediateOutputPath>

+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

+    <NoStdLib>True</NoStdLib>

+    

+    <NoConfig>True</NoConfig>

+    

+    <AppDesignerFolder>Properties</AppDesignerFolder>

+    <RootNamespace>

+    </RootNamespace>

+    <AssemblyName>Mono.Cecil</AssemblyName>

+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>

+    <FileAlignment>512</FileAlignment>

+  </PropertyGroup>

+    <PropertyGroup>

+    <SignAssembly>true</SignAssembly>

+  </PropertyGroup>

+  <PropertyGroup>

+    <AssemblyOriginatorKeyFile>../../mono.snk</AssemblyOriginatorKeyFile>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

+    <DebugSymbols>true</DebugSymbols>

+    <DebugType>full</DebugType>

+    <NoWarn>1699,1699</NoWarn>

+    <Optimize>false</Optimize>

+    <DefineConstants>TRACE;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

+    <DebugType>pdbonly</DebugType>

+    <NoWarn>1699,1699</NoWarn>

+    <Optimize>true</Optimize>

+    <DefineConstants>NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5;NET_4_0;NET_4_5;NET_4_6;MONO;NET_3_5</DefineConstants>

+    <ErrorReport>prompt</ErrorReport>

+    <WarningLevel>4</WarningLevel>

+  </PropertyGroup>

+  <!-- Set AddAdditionalExplicitAssemblyReferences to false, otherwise if targetting .NET4.0, 

+  Microsoft.NETFramework.props will force a dependency on the assembly System.Core. This

+  is a problem to compile the Mono mscorlib.dll -->

+  <PropertyGroup>

+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>

+  </PropertyGroup>

+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

+  <ItemGroup>

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\Code.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\CodeReader.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\CodeWriter.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\Document.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\ExceptionHandler.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\ILProcessor.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\Instruction.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\MethodBody.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\OpCode.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\OpCodes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\SequencePoint.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\Symbols.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\VariableDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Cil\VariableReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\BlobHeap.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\Buffers.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\CodedIndex.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\ElementType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\GuidHeap.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\Heap.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\MetadataToken.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\Row.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\StringHeap.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\TableHeap.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\TokenType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\UserStringHeap.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.Metadata\Utilities.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\BinaryStreamReader.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\BinaryStreamWriter.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\ByteBuffer.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\ByteBufferEqualityComparer.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\DataDirectory.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\Image.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\ImageReader.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\ImageWriter.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\Section.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil.PE\TextMap.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ArrayType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyFlags.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyHashAlgorithm.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyInfo.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyLinkedResource.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyNameDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyNameReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyReader.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\AssemblyWriter.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\BaseAssemblyResolver.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\CallSite.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\CustomAttribute.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\DefaultAssemblyResolver.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\EmbeddedResource.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\EventAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\EventDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\EventReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ExportedType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\FieldAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\FieldDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\FieldReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\FileAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\FunctionPointerType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\GenericInstanceMethod.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\GenericInstanceType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\GenericParameter.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\GenericParameterAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\IConstantProvider.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ICustomAttributeProvider.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\IGenericInstance.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\IGenericParameterProvider.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\IMarshalInfoProvider.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\IMemberDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\IMetadataScope.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\IMetadataTokenProvider.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\IMethodSignature.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\Import.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\LinkedResource.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ManifestResourceAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MarshalInfo.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MemberDefinitionCollection.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MemberReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MetadataResolver.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MetadataSystem.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MethodAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MethodCallingConvention.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MethodDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MethodImplAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MethodReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MethodReturnType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MethodSemanticsAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\MethodSpecification.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\Modifiers.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ModuleDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ModuleKind.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ModuleReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\NativeType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ParameterAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ParameterDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ParameterDefinitionCollection.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ParameterReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\PinnedType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\PInvokeAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\PInvokeInfo.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\PointerType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\PropertyAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\PropertyDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\PropertyReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\ReferenceType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\Resource.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\SecurityDeclaration.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\SentinelType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\TargetRuntime.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\TypeAttributes.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\TypeDefinition.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\TypeDefinitionCollection.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\TypeParser.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\TypeReference.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\TypeSpecification.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\TypeSystem.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Cecil\VariantType.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Collections.Generic\Collection.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Collections.Generic\ReadOnlyCollection.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Security.Cryptography\CryptoConvert.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono.Security.Cryptography\CryptoService.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono\Actions.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono\Empty.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\Mono\Funcs.cs" />

+    <Compile Include="..\..\..\..\external\cecil-legacy\System.Runtime.CompilerServices\ExtensionAttribute.cs" />
  </ItemGroup>

+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

+       Other similar extension points exist, see Microsoft.Common.targets.

+  <Target Name="BeforeBuild">

+  </Target>

+  <Target Name="AfterBuild">

+  </Target>

+  -->

+  <PropertyGroup>

+    <PreBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PreBuildEvent>

+    <PreBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PreBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' != 'Windows_NT' ">
+
+    </PostBuildEvent>

+    <PostBuildEvent Condition=" '$(OS)' == 'Windows_NT' ">

+

+    </PostBuildEvent>

+  </PropertyGroup>

+  <ItemGroup>

+    <ProjectReference Include="../../corlib/corlib-net_4_x.csproj">

+      <Project>{2CA6026B-2DC8-4C4C-A12C-1E8234049DB7}</Project>

+      <Name>corlib-net_4_x</Name>

+    </ProjectReference>

+    <ProjectReference Include="../../System.Core/System.Core-net_4_x.csproj">

+      <Project>{359142A1-D80F-401E-AA64-7167C9317649}</Project>

+      <Name>System.Core-net_4_x</Name>

+    </ProjectReference>

+  </ItemGroup>

+  <ItemGroup>

+    <Folder Include="Properties\" />

+  </ItemGroup>

+</Project>

+
diff --git a/mcs/class/monodoc/monodoc-net_4_x.csproj b/mcs/class/monodoc/monodoc-net_4_x.csproj
index 114d68896c5..8fd26ed2f5b 100644
--- a/mcs/class/monodoc/monodoc-net_4_x.csproj
+++ b/mcs/class/monodoc/monodoc-net_4_x.csproj
@@ -28,7 +28,7 @@
     <DebugType>full</DebugType>

     <NoWarn>618,612,672,809,1699,169,164,162,168,219,618,612</NoWarn>

     <Optimize>false</Optimize>

-    <DefineConstants>TRACE;LEGACY_MODE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>TRACE;LEGACY_MODE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>

@@ -36,7 +36,7 @@
     <DebugType>pdbonly</DebugType>

     <NoWarn>618,612,672,809,1699,169,164,162,168,219,618,612</NoWarn>

     <Optimize>true</Optimize>

-    <DefineConstants>LEGACY_MODE;NET_4_0;NET_4_5;NET_4_6;MONO;DISABLE_CAS_USE</DefineConstants>

+    <DefineConstants>LEGACY_MODE;NET_4_0;NET_4_5;NET_4_6;MONO</DefineConstants>

     <ErrorReport>prompt</ErrorReport>

     <WarningLevel>4</WarningLevel>

   </PropertyGroup>