added stream_vector_copy trick to rstr as well
added stream_vector_copy trick to rstr as well

egeor/libxsmm,maxhutch/libxsmm,egeor/libxsmm,hfp/libxsmm,egeor/libxsmm,hfp/libxsmm,hfp/libxsmm,egeor/libxsmm,hfp/libxsmm,hfp/libxsmm,egeor/libxsmm,hfp/libxsmm,maxhutch/libxsmm,maxhutch/libxsmm,egeor/libxsmm,maxhutch/libxsmm