Switches (Boolean & Trace) should be working now. Behavior of user-provided

Switch derived classes should match that of .NET.

Go forth and use Swiches! ;-)

ChangeLog:
  * BooleanSwitch.cs: Complete re-write.  It works now.
  * DefaultTraceListener.cs:
    - Use `const' strings, so I don't worry about copy/paste errors
    - Give `AssertUiEnabled' an actual backing member
  * DiagnosticsConfigurationHandler.cs: To avoid race conditions, let the
    configuration handler set .config-specified properties on
    DefaultTraceListener (AssertUiEnabled, LogFileName) and TraceImpl
    (AutoFlush, IndentSize).
  * Switch.cs: Near complete re-write.  Actually works, and is (should be)
    comformant with .NET behavior.  Changed member names because they were
    confusing me.  (Yes, that doesn't say much about my memory.)
  * TextWriterTraceListener.cs: Append text to already existing files, don't
    overwrite them.
  * TraceImpl.cs:
    - Added private destructor, to ensure no instances are created.
    - Move members declarations to be closer to each other.
  * TraceSwitch.cs: Complete re-write.  It works now.

svn path=/trunk/mcs/; revision=9747

1 files changed, 12 insertions, 7 deletions

diff --git a/mcs/class/System/System.Diagnostics/TraceImpl.cs b/mcs/class/System/System.Diagnostics/TraceImpl.cs
index f159f2518c4..623bf2a0c40 100644
--- a/mcs/class/System/System.Diagnostics/TraceImpl.cs
+++ b/mcs/class/System/System.Diagnostics/TraceImpl.cs
@@ -10,6 +10,7 @@
 
 using System;
 using System.Diagnostics;
+using System.Configuration;
 
 namespace System.Diagnostics {
 
@@ -17,16 +18,23 @@ namespace System.Diagnostics {
 
 		private static object lock_ = new object ();
 
-		private static bool autoFlush = false;
+		private static bool autoFlush;
+
+		[ThreadStatic]
+		private static int indentLevel = 0;
+
+		[ThreadStatic]
+		private static int indentSize;
+
+		private TraceImpl ()
+		{
+		}
 
 		public static bool AutoFlush {
 			get {return autoFlush;}
 			set {autoFlush = value;}
 		}
 
-		[ThreadStatic]
-		private static int indentLevel = 0;
-
 		public static int IndentLevel {
 			get {return indentLevel;}
 			set {
@@ -40,9 +48,6 @@ namespace System.Diagnostics {
 			}
 		}
 
-		[ThreadStatic]
-		private static int indentSize = 4;
-
 		public static int IndentSize {
 			get {return indentSize;}
 			set {