TextureStateRecord bug: isCompressedType - NativeDXT1A

NativeDXT1A images do not work at all because the GL texture load function considers them as uncompressed, thus using the regular entry point causing a GL error. It occurs in both LWJGL and JOGL mode.

In TextureStateRecord, edit the isCompressedType function like so:

     public static boolean isCompressedType(Format format) {
         switch (format) {
             case NativeDXT1:
+            case NativeDXT1A:
             case NativeDXT3:
             case NativeDXT5:
                 return true;