Lightweight Java Game Library Code

Made all GL functions only query ContextCapabilities.getCapabilities() once. Now all GLCheck checks will take the ContextCapabilities instance as an argument instead of querying for it. Inspired by MatthiasM, who just don't seem to be content with LWJGL performance, ever ;)

Shave off one ThreadLocal access in StateTracker.push/popAttrib()

Display: Don't add the shutdown hook twice when a previous create() call has failed

beta4

JNI_VERSION restructure

JNI_VERSION restructure

Updated Controllers event queue to make use of the new JInput
event queue, including adding getEventNanoseconds() to the
Controllers interface. TestControllers against Logitech pad on
Win32 confirms that no behaviour changes are evident.

Updated to return the controller name unmodified from JInput.

Restore old Mouse.create/Keyboard.create behavior which is to ignore create() when already created.

Made LWJGLUtil.getPathFromClassLoader run the protected ClassLoader.findLibrary in a privileged context. This is apparently necessary to get a valid path in some cases. This fixes (at least) a problem where OpenAL failed to locate the native openal library in a web start program.