Lightweight Java Game Library Code

Linux: Moved saved display mode from C to LinuxDisplay.java

Linux: Moved some JNI functions

Linux: Moved a display connection to java

Linux: Move gamma ramps to java code

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

Added java debug output to linux display.c

Linux: Fixed problem with updating screen dimension globals

Linux: reset/restore gamma settings on activate/deactivate

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.