regent: Update code generator for domain point indexing.
regent: Update code generator for domain point indexing.

chuckatkins/legion,chuckatkins/legion,StanfordLegion/legion,sdalton1/legion,chuckatkins/legion,chuckatkins/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,chuckatkins/legion,sdalton1/legion,chuckatkins/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,chuckatkins/legion