Changes

Graph: updated inclass documentations

Graph: Remove unused imports

TestGLSLShaderState01 PerfTest: 2min timeout / swapInterval 0 / start counter after warmup

Minor editing/cleanups: code/test

- Don't call "NativeWindowFactory.initSingleton(true);" after "GLProfile.initSingleton(true);",
  since it's redundant, the former call issues the removed one.

X11/Newt Locking: Clarify dependency of XInitThreads() hack

Minor editing (compile script, X11Window.c - cleanups)

Added handling for offcurve triangle overlaps.

subdivde overlaping triangles for the case of vertex inside
a off-curve boundary triangle.

added vertex in triangle test (using barycentric coordinates)

Handle curved triangles overlaps.

subdivde overlaping triangles for the case when 2 triangles intersect
either by vextex of Traingle A in Triangle B
or an edge in A intersects an edge in B

VectorUtil:
  -added tri2triIntersection test (not optimized)
  -added seg2segIntersection test (not optimized)

X11 Nativewindow/NEWT: X11 Error Handler (JNIEnv query for thread, stack trace), cleanup

- X11 Error Handler: if throwing JVM stack trace or fatal JVM error
  query proper JNIEnv for running thread and attach thread to JVM if necessary.

- NEWT/X11: Proper XEvent polling documentation, cleanup window creation event mask

Woraround for bug 502: X11/NEWT Stalling due to libX11/XCB Multithreading bug (libX11 1.4.2, libXCB 1.7; ubuntu 11.04, ..)

- https://jogamp.org/bugzilla/show_bug.cgi?id=502

- set the boolean property 'nativewindow.x11.mt-bug' to 'true',
  indicating the erroneous libX11/libXCB behavior. This will enable extensive X11 locking even in NEWT.

Cleanup UITestCase helper, expose test class name via get*TestName() ..

add property 'nativewindow.x11.mt-bug' to test script ..