 glsl-fs-min is one of the random failing tests actually, it sometimes pass
sometimes fail with or without subreg liveness, so that is not problem here i
think.

 Currently i have 7 warns, 1 test which made gpu fault, 4 are crash/segfault
and 22 which random failing. 18 of those that random failing (mostly on second
piglit run) are EXT_transform_feedback/xyz tests, 4 on some glsl tests, etc...

 In whole that is 34 potentionaly problematic tests, with all those excluded
from run, this is what i get - 136 tests which fail with subreg liveness
enabled:

 https://dl.dropboxusercontent.com/u/74553632/compare2.tar.bz2