legion: fixing a bug in applying mapping changes for explicit copy operations
legion: fixing a bug in applying mapping changes for explicit copy operations

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