switched to file-backed mmap to be c89 compatible
switched to file-backed mmap to be c89 compatible

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