cmake: add TSAN build type for thread-sanitizer goodness
cmake: add TSAN build type for thread-sanitizer goodness

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