Changes

Fix: Ensure proper resource initialization (display call)

Expose provided SWT jars to SWT_CLASSPATH for test scripts

Fix: X11: Allowing FBConfig w/o XVisualInfo for non onscreen

Fix for Bug #452
WindowsWGLGraphicsConfiguration.create(..) ->
WindowsWGLGraphicsConfiguration.createFromCurrent(..) emphasizing that
all resources are 'current' ie locked and available.
This method is used for the external context/drawable creation only, called
while they are current.
Hence this method no more makeCurrent/release, which interfered with the
current external context state.

WindowsWGLGraphicsConfigurationFactory: Move surface locking to the right
(common) place.