Cycles / OSL: * Fixes for changes in the OSL register_closure() API. 
Cycles / OSL:
* Fixes for changes in the OSL register_closure() API. 

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