Quirk DontCloseX11Display: Only detect w/ X11 NativeWindow System.
Fix Bug 706 and Bug 520: Certain ATI GPU/driver require a current context when calling wglCreateContextAttribsARB (Windows)

See discussion at
   https://jogamp.org/bugzilla/show_bug.cgi?id=520
   https://jogamp.org/bugzilla/show_bug.cgi?id=706