20050819:
- clean up / make faster the fetch functions, especially the 565 to 888 expand was slow
20050908:
- fix overflow/underflow of some values (avoids artifacts with some textures) in
  fancybasecolorsearch when compressing (fix by Dave Airlie).
20060508:
- fix serious copy & paste errors in fetch functions introduced with 20050819 version
- new Makefile (provided by Tilman Sauerbeck)
- minor cosmetic fixes

20070518:
- add the missing dstRowStride parameter Mesa uses