Changes

NEWT X11 Fix (mainly ATI and multithreading)
    - EventDispatchThread -> EDTUtil
      Since the name leads to the assumptions that an instance is the EDT.
      EDTUtil manages the EDT within.

    - EDTUtil, no more reference to Display, but use a Runnable for the
      pumpMessage()

    - Window.destroy() check if already done

    - X11Window: Added XErrorHandler to catch BadWindow and BadAtom
      while dispatching events - it is possible that the resource
      is already freed. Also added an XIOErrorHandler to identify
      the fatal Display* inaccessibility.

Tests:
    - New junit/com/jogamp/test/junit/newt/TestWindows01NEWT.java
      Testing creation/destruction and double destruction (error case)

    - Fix: src/junit/com/jogamp/test/junit/jogl/offscreen/TestOffscreen01NEWT.java
      Properly holding all NEWT references ..

Misc:
    - Reduced redundant NEWT 'toString()' output (*Capabilities, ..)
    -

ATI (fglrx) PBuffer/X11Display bug workaround/cleanup

    - See https://bugzilla.mozilla.org/show_bug.cgi?id=486277

    - Description:
        - To use PBuffer, a context must be current

        - X11Display cannot be switched while using the PBuffer
          [within one thread]. Hence we shall try harder to reuse
          _the_ user configured X11Display - whenever possible.
          This is actually a good thing, ie cleanup up our
          code again.

    - Changes to workaround/cleanup:
        - GLDrawableFactory* methods 'canCreate*()'
          are changed to 'canCreate*(AbstractGraphicsDevice)'
          to allow pipelining the X11Display.
          This reduces the overhead of using a local TLS X11Display.

    - WindowsDummyWGLDrawable cstr gets the GLProfile as a parameter now,
      this is done while adding X11DummyGLXDrawable - forseeing the
      usecase to query available GLProfiles at startup.

    - X11DummyGLXDrawable added, following the WindowsDummyWGLDrawable path
      to have a dummy GLContext current to fix the ATI bug.

NativeWindow X11:
    - Add XIOErrorHandler to identify the fatal failure
      of closing a Display (-> ATI bug).

Build:
    - Adding ant.jar and ant-junit.jar to the junit compile/run classpath
    -

Misc:
    - Fix: CreateDummyWindow(..) returns a HWND, not a HDC
    - mapToRealGLFunctionName: Added mapping for X11/GLX.
    - X11GLXGraphicsConfigurationFactory: Uncommented dead code 'createDefaultGraphicsConfigurationFBConfig'

Tests: Passed (Linux64bit: NVidia/ATI)

Todo: More tests on ATI, especially multithreading/X11Display usage.