CUDA / sm_20: * Enable Lamp MIS again, it works on a GTX 570 (which is sm_20) with latest SVN. Tested by vitos1k in IRC:. Feedback from GTX 580 users would be appreciated on this. 
CUDA / sm_20:
* Enable Lamp MIS again, it works on a GTX 570 (which is sm_20) with latest SVN. Tested by vitos1k in IRC:.
Feedback from GTX 580 users would be appreciated on this. 

tangent-opensource/coreBlackbird,pyrochlore/cycles,tangent-opensource/coreBlackbird,pyrochlore/cycles,tangent-opensource/coreBlackbird,pyrochlore/cycles