vertical build port to Dev/eng [Do not merge] (#14171)

* Vertical build changes

* Build a vertical in dev/eng

* remove repro.bat from check-in

* Remove defaulttargetgroup from configurations.props files

* Remove configurations.props from test libraries

* Additional configuration files, updating traversal.

* Add default configurations for ref projects

* Remove default targetgroups, disable code analysis (currently breaking the
vertical build).

* Build vertical using Eric's changes to configurations

* Minor fixes to build from a clean enlitment

* Set targets properties in dir.props

* Make vertical build the default

* Include building src\tools in init-tools.cmd

* Add linux init-tools

* Fix msbuild.sh command

* Add build tools message to Linux

* Revert init-tools, investigate building corefx tools tomorrow

* Update configurations, remove empty targetgroup from all projects, modify
most conditionals to be positive conditions instead of negative

* Remove unneccessary generateprojectconfigurations project

* Build CoreFx.tools in init-tools

* Can't build corefx.tools in init-tools because packages aren't restored

* Hack build to build refs first

* Slightly less hacky reference project build, but still kind of hacky...

* Align properties for ref builds to prevent binclash and overbuilding

* Update BeforeTarget for rename

* Rework traversal to work with ref and corefx tools projects

* Add target for builds projects

* Fully qualify paths to projects

* Fully quality path name for corefx.tools

* testing removing osgroup from groovy on Windows

* Remove OSGroup from config.json

* revert change to groovy

* return os property

* Try changing osgroup to hostos

* hack around osgroup setting

* Fix passing groups

* Add system.collections which was missing from system.console

* Add some missing references for Unix build

* Add references for unix

* Unix support changes

* Fix typo in system.net.http

* Fix typo in system.threading.overlapped

* no ref project available for system.reflection.metadata

* Unix changes

* Exclude system.memory

* diagnostics.fileversioninfo was missing reference to Path

* Unix changes

* Fix reference name

* Add reference for unix

* Move source file to windows only

* Disable building system.threading.overlapped

2 files changed, 9 insertions, 1 deletions

diff --git a/src/System.AppContext/src/Configurations.props b/src/System.AppContext/src/Configurations.props
new file mode 100644
index 0000000000..5eebcd5afb
--- /dev/null
+++ b/src/System.AppContext/src/Configurations.props
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <BuildConfigurations>
+      net463;
+      netstandard1.7;
+    </BuildConfigurations>
+  </PropertyGroup>
+</Project>
diff --git a/src/System.AppContext/src/System.AppContext.csproj b/src/System.AppContext/src/System.AppContext.csproj
index 2172ead3bf..3795494b0a 100644
--- a/src/System.AppContext/src/System.AppContext.csproj
+++ b/src/System.AppContext/src/System.AppContext.csproj
@@ -10,7 +10,6 @@
     <!-- The following line needs to be removed once we have a targeting pack for 4.6.3 -->
     <TargetingPackNugetPackageId Condition="'$(TargetGroup)'=='net463'">Microsoft.TargetingPack.NETFramework.v4.6.2</TargetingPackNugetPackageId>
     <ExcludeResourcesImport Condition="'$(IsPartialFacadeAssembly)'=='true'">true</ExcludeResourcesImport>
-    <NuGetTargetMoniker Condition="'$(TargetGroup)' == ''">.NETStandard,Version=v1.7</NuGetTargetMoniker>
   </PropertyGroup>
   <!-- Default configurations to help VS understand the options -->
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'" />