Lightweight Java Game Library Code

Added setLocation support for linux

Improved _NET_WM_STATE_FULLSCREEN support for older kde window managers

Converted native code from C++ (.cpp files) to C (.c files), thus avoiding an annoying dependency on the standard C++ library on Linux. We weren't using any particular C++ features anyway.

Linux: improve cursor position handling (warp behaviour)

Removed commented out code

Linux: Reimplemented undecorated flag through use of the obscure Motif window manager hint instead of the override_redirect flag

Linux: cleanup and remove input grab in button press

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.

Linux: Added support for X RandR extension

Linux: Added missing throwException in display.cpp.initDisplay()