Lightweight Java Game Library Code

Fixed JDK5 compilation issue and added SpriteShootout textures.

Added support for AMD_blend_minmax_factor & NV_texture_multisample.
Added sprite rendering samples.
Fixed ContextAttribs version checking for GL41.

Attempt to fix NV compilation issue.

AppletLoader: minor javadoc credits update.

AppletLoader: fix bug with al_version (should work correctly now). Thx to pjohnsen for spotting it.

AppletLoader: fix JVM bug where '!' is not escaped on the URL, thanks to NateS for spotting it and special thanks to MatthiasM for the fix.

AppletLoader: implemented headless mode. Use the "al_headless" parameter to enable it. Use liveconnect to access the getStatus() and getMessages() methods to obtain the progress of the AppletLoader.

AppletLoader: clean up and simplify code relating to reading and writing cache/version files.

AppletLoader: Add better checks/protection to reading cache/version files in case of corruption. Close resources properly when writing cache/version files. Add preliminary list of contributors. Thx to Arielsan for finding issue and providing patch.

AppletLoader: "al_logo" and "al_progress" are now optional parameters, they default to "appletlogo.gif" and "appletprogress.gif". Credit to arielsan for patch.