Update: BFI_INT support.

I now have the fastest miner known to man.

On my Radeon 5850 @ 765 /w SDK 2.1

Phoenix DEVICE=1 VECTORS WORKSIZE=128 BFI_INT AGGRESSION=5, 7, 11, 13, with or without FASTLOOP = 273

poclbm -v -w 128 -f 60 = 292

DiabloMiner -v 2 -w 128 -f 60 = 302