Changes

GLDebugMessageHandler: Move Windows 32bit exclusion to init() block signaling no extension is available.

GLDrawableFactory*.createOffscreenDrawable(): No implicit setRealized(true) @ creation

GLDrawableFactory*.createOffscreenDrawable():
No implicit setRealized(true) @ creation, following deferred creation like onscreen drawables.
This allows using offscreen drawables in classes like GLCanvas, where realization is deferred due to pending valid size.
Only createGLPBuffer() realizes the offscreen pbuffer drawable immediatly to reduce the impact
on user-code.

GLDrawableFactoryImpl.createGLDrawable():
  - Simplify OffscreenLayerSurface validation and check it first regardless of the chosenCaps
    to get a chance to use pbuffer.

New Interface 'OffscreenLayerOption', impl. by JAWTWindow (impl) and NewtCanvasAWT/GLCanvas (delegation) ; Fix GLCanvas OffscreenLayerSurface usage.

JAWTWindow.destroy():
- No more getGraphicsConfiguration().getScreen().getDevice().close() call,
  since the configuration (hence the device) is passed @ creation and owned by the caller.

New Interface 'OffscreenLayerOption', impl. by JAWTWindow (impl) and NewtCanvasAWT/GLCanvas (delegation)
- Abstract offscreenLayer option to be delegated by using classes
- Allow offscreen testing of GLCanvas as well (like NewtCanvasAWT)

Fix GLCanvas OffscreenLayerSurface usage
- common 'createDrawableAndContext()' for context and drawable instance creation

- addNotify() calls createDrawableAndContext() after super.addNotify() to be able
  to lock the surface (JAWTWindow) and hence to determine offscreen usage.

- reshape(...) issues recreation 'dispose(true)' in case of using an offscreen layer

- dispose() explicitly destroys the JAWTWindow

NewtCanvasAWT:
- explicitly close the device of the JAWTWindow (as GLCanvas does)

Tests:
  com.jogamp.opengl.test.junit.newt.parenting.TestParentingOffscreenLayer01GLCanvasAWT
  com.jogamp.opengl.test.junit.newt.parenting.TestParentingOffscreenLayer02NewtCanvasAWT

MacOSXCGLContext Offscreen Layer: Throw exception in case drawable is not realized or texture size is invalid.

MaxOSXWindowSystemInterface: deleteContext / releaseNSOpenGLLayer:
- release on main-thread doesn't wait anymore
- use recursive lock

test scripts

test scripts: add argument for java data-type (32 or 64 bit) ; Add OSX 32/64 bit test script.

JOGL junit.run: Add 32bit tests for OSX (fat binaries)

JAWT_DrawingSurface.c: Fail fast in case of NULL platformInfo or sizeof(platformInfo)==0

No GLCanvas offscreen surface (as in NEWT) - test disabled