[Mesa-dev] Unmerged r600 fixes

[Ian Romanick]

Marek,

There are a handful of r600g patches on master that are marked as 
candidates for the stable branches.  The first in the series (933faae) 
doesn't apply cleanly to 9.0, and I assume it won't apply cleanly to 8.0 
either.  Could you pick these over?

933faae2b8669f459e7ab27d6bcbfb6f4136b6d5 r600g: flush FMASK and CMASK 
when changing colorbuffers on Evergreen
836325bf7edd797e02ab0717a05ca5c51aa1ac93 r600g: fix instance divisor on 
Cayman
fd5c5384648a0d6191c19748a2d1f1148c5ee98f r600g: fix RSQ of negative 
value on Cayman
96f50d0cf7bb13507f272d2f6ef9a6fca24d18e1 r600g: fix EXP on Cayman