runtime: move INC_FLAGS to end of build rules to allow -I in user-supplied CC_FLAGS to win
runtime: move INC_FLAGS to end of build rules to allow -I in user-supplied CC_FLAGS to win

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