legion: overload for handling realm points as strides from affine accessors
legion: overload for handling realm points as strides from affine accessors

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