cuda: support for cudaStreamLegacy and cudaStreamPerThread
cuda: support for cudaStreamLegacy and cudaStreamPerThread

StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion