just to let you guys know that with latest llvm 3.8 (256187) fixes and mesa up
to 50fc4a925644378c50282004304bc8fd64b95e3c, it takes much longer for xcom
enemy unknown to crash the GPU, i played for two solid hours, so its getting
better. if someone wants, i can test the drirc workaround for
glDrawRangeElementsBaseVertex, just put a .drirc here.