Lightweight Java Game Library Code

Linux: removed getWindowWidth/Height from native side

Linux: Moved display mode extension and window state handling up into java 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.