Blender Git Loki

Cycles: Make CUDA backend aware of sm_52 (Maxwell).

In order to compile the new kernel you need to specify sm_52 in SCons / CMake, and use CUDA Toolkit 6.5.19, from here: https://developer.nvidia.com/cuda-downloads-geforce-gtx9xx

Note: sm_52 is not enabled per default yet, so it won't be bundled with the Buildbot builds. That will be addressed later.