Lightweight Java Game Library Code

fixed issue with single-line if

fix: Keyboard focus handling broken when using Display.setParent() applets on Ubunutu (strangly worked on OpenSuse), hopefully should be fixed now.

AppletLoader: fix issue with caching and lzma/pack200 files

Appletloader: fix caching issue with native jars

AppletLoader: fix code to compile on java 1.4

Appletloader: Initial implementation of a proper caching system. Files will only be downloaded if lastModified time is different from when files were downloaded previously. al_cache parameter is used to disable and enable this caching (default: true). This caching will not be used if al_version parameter is used.

AppletLoader: fixed flicker on animated gifs using ImageObserver. When image is ready to be drawn it is copied into a buffer image ready to be drawn. Also now supports variable time animated gifs and not limited to drawing only every 100ms.

Display sync modified to allow it to be interrupted.
Thanks to bobjob for this, further thanks to MatthiasM for pointing out that the interrupt should not be swallowed.

Compiz LFS improvements.