Scons: Some tweaks for f70d9660474c, we don't need SSE41 kernel for 32bit, nor vc2008 x64.
Scons: Some tweaks for f70d9660474c, we don't need SSE41 kernel for 32bit, nor vc2008 x64.

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