Lightweight Java Game Library Code

Bumped Sys.JNI_VERSION because of earlier OpenGL function changes

fix loading issues on linux/mac

Linux: Don't double free the Display connection in the switchDisplayMode error path

ARBTextureCompression, GL13: Only allow ByteBuffer for glCompressedTex*Image*D since the spec defines that the image data is interpreted as (unsigned) bytes anyway. Also let the imageSize parameter be automatically determined

Generator: Make sure that @GLvoid types result in proper address calculations at the native side, even though the parameter java type is not java.nio.Buffer

Remove GL.java and GLImpl.java as they're not updated automatically anyway

Linux: Tweak LinuxAWTInput

Windows: Make sure that the cursor position doesn't jump when switching grab mode

Windows: Fix potential NPE

Compile fix