Lightweight Java Game Library Code

Linux support for AWTGLCanvas. Big refactor of context specific code into Context.java that is now shared between Display, Pbuffer and AWTGLCanvas. (Win32 and Mac OS X is now broken while I implement the same changes on those platforms)

Linux: Release context before destroying it

Added java debug output to linux display.c

More linux fixes

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Linux: Improve input latency by processing X messages from nPoll and nRead

Linux: improve cursor position handling (warp behaviour)

Linux: Implemented support for Extended Window Manager Hints. LWJGL now cooperates
much better with the window manager, if the X randr and EWMH extensions are supported.
Especially fullscreen handling has improved, by avoiding the use of the override_redirect
flag.

Win32 part of fast Pbuffer

Implemented new type of Pbuffer that use the Display context, which is faster than a separate context (Linux)