Here's a new version of the texture compression patch.
- Thanks to Brian's changes all (core mesa) changes are now in only one
file (texcompress_s3tc.c), except one boolean variable.
- the texel fetch code works again (not sure why it didn't work last time)
- some small cleanups in the library code (no more ugly casts, no more
- some very minor changes in the radeon/r200 ChooseTextureFormat functions
That's about it...
Though I'm considering dropping the dynamic loader stuff and just
integrate everything back into mesa. It just doesn't make sense to have
these functions in a separate library if it's still necessary to patch mesa.