[Debugger] Improved generic method invocation support
[Debugger] Drop the [Obsolete] attributes
[Debugger.Win32] Updated for newer APIs allowing generic method invocation
[Debugger] Fixed a bug in SDB's new HasMethod() implementation
[Debugger] Implemented support for LINQ extension methods in the debugger

Fixes bug #11947

Partially fixes bug #4610 and bug #9919