A couple of fixes and performance enhancements for static synchronized and static native methods.

Changes:

• Fixed ikvmc so it no longer throws an exception if no output filename is specified (or implied).
• Fixed monitorenter instruction and synchronized methods to not throw InterruptedException.
• Added [DebuggerStepThroughAttribute] to all methods in ByteCodeHelper that didn't have it yet.
• Added class object caching for static synchronized and native methods.
• Fixed Thread.stop() so that it works on suspended threads.
• Implemented a few more random awt peer methods.
• Removed gnu.classpath.RawData mapping from map.xml.
• Changed ikvm.exe setting of gnu.classpath.home and java.class.path properties so that they end up in the default system properties.
• Added IKVM.Runtime.Startup.EnterMainThread() and ExitMainThread() methods (and changed ikvm.exe) to encapsulate the setup and tear-down of the main thread.
• Fixed JNIEnv.MonitorEnter to use ByteCodeHelper.monitorenter.
• Fixed compiler bug that caused invoking CharSequence methods to generate a ClassCastException.
• Changed ikvmc main stub method to call Startup.EnterMainThread() and ExitMainThread() and to pass unhandled exceptions to ThreadGroup.uncaughtException().
• Fixed JNI method invocation to not wrap exceptions in java.lang.reflect.InvocationTargetException.
• Fixed support for synchronized native methods.
• Fixed bug in JNI proxy generator (only used when -Xsave option is specified).
• Named the WaitShutdownHook and SaveAssemblyShutdownHook threads in starter.cs.
• Fixed JNIEnv.RegisterNatives when JNI proxy generator is used.
• Fixed Double.parseDouble to parse +Infinity correctly.

New snapshots: just the binaries and source plus binaries.