Changes

NEWT/Windows: Use GDI GetDC/ReleaseDC

GDI: Fix CreateDummyWindow: Use local getModuleHandle(NULL) and synchronize factory method.

DummyWindow: 64x64, WGL: Use lockSurface/unlockSurface block to gather / release HDC

JOGL: GLContextImpl's updateGLXProcAddressTable(..) only uses device as a key for cached table, since
the GLX/WGL/etc function entry pointers are GL profile agnostic.

Hence createContextARBImpl(..) (WGL/GLX) does not need a sharedContext,
but just can issue the inexpensive updateGLXProcAddressTable(..) call.

NativeWindow: Expose lock test/get methods and constructor with HDC

Cleanup GLGraphicsConfiguration[Factory] implementations (X11/WGL)

- AWT/WGL:
    - Using sun.awt.Win32GraphicsConfig via reflection, if supported, else we may fail.
    - Preselection of PFD as follows:
      - 1st choice is to create our own AWT GraphicsConfig (GC) based on PFD/GLCaps,
        ignoring WGL_SUPPORT_GDI_ARB, PFD_SUPPORT_GDI
      - 2nd choice is to use AWT PFD pool of GC's
      - else we fail -> use NewtCanvasAWT instead (TODO: Other JDK/AWT implementations ?)
    - Set PFD will be performed at setRealized(..)

- SharedContext (X11/WGL) is synchronized to allow multithreaded access, if required

- Simplified and unified (X11/WGL) GraphicsConfigurationFactory

- WGL 'external' drawables will be determined with given arguments right away

WGL/DummyWindow: Roll back GetDC/ReleaseDC via lock/unlock surface, redundant, since it's static DC

Minor test cleanup

NEWT: Minor cleanup ; Debug setVisible message in issuing thread

FIX gears demo: set lists to 0 at dispose

GDI: Add GetObjectType(..)

GLCanvas: sync drawable access; flush awtConfig at remove;

little TODO update