Upgraded LWJGL to 2.9.1 and JInput to 2.0.5.

If you use the ClassiCubeLauncher and want to use LWJGL 2.9.1 now, you will have to use a special version that will not force LWJGL downgrade: http://www.fcraft.net/ccc/ClassiCubeLauncher58-LibVerificationDisabled.jar

You will also need to make sure that LWJGL 2.9.1 binaries are in your library path. You can get it from http://lwjgl.org/download.php

...or, for your convenience, here are exact files you need in <code>.net.classicube.client</code>:
* Windows binaries: http://www.fcraft.net/ccc/LWJGL_2.9.1_Win.zip
* Linux binaries: http://www.fcraft.net/ccc/LWJGL_2.9.1_Linux.zip