isl_mat_transpose: handle non-rectangular matrices
isl_mat_transpose: handle non-rectangular matrices

BobSaget-Mod/libisl,BobSaget-Mod/libisl,simbuerg/isl,jleben/isl,Meinersbur/isl,SaberMod/isl-current,evaautomation/isl,UBERTC/isl,nicolasvasilache/isl,VanirLLVM/toolchain_isl,BenzoSM/isl,BenzoSM/isl,tobig/isl,evaautomation/isl,inducer/isl-mirror,inducer/isl-mirror,cfx-next/toolchain_isl-upstream,serge-sans-paille/isl,KangDroidSMProject/ISL,epowers/isl,PollyLabs/isl,BobSaget-Mod/libisl,VanirLLVM/toolchain_isl,pierrotdelalune/isl,BenzoSM/isl,Distrotech/isl,Meinersbur/isl,pierrotdelalune/isl,simbuerg/isl,Meinersbur/isl,SaberMod/isl-current,PollyLabs/isl,BobSaget-Mod/libisl,pierrotdelalune/isl,tobig/isl,crossbuild/isl,tobig/isl,PollyLabs/isl,KangDroidSMProject/ISL,VanirLLVM/toolchain_isl,abduld/isl,BobSaget-Mod/libisl,nicolasvasilache/isl,jleben/isl,nicolasvasilache/isl,Distrotech/isl,simbuerg/isl,jleben/isl,epowers/isl,nicolasvasilache/isl,inducer/isl-mirror,cfx-next/toolchain_isl-upstream,simbuerg/isl,UBERTC/isl,abduld/isl,VanirLLVM/toolchain_isl,crossbuild/isl,epowers/isl,epowers/isl,evaautomation/isl,pierrotdelalune/isl,tobig/isl,KangDroidSMProject/ISL,UBERTC/isl,Distrotech/isl,abduld/isl,serge-sans-paille/isl,serge-sans-paille/isl,SaberMod/isl-current,epowers/isl,KangDroidSMProject/ISL,KangDroidSMProject/ISL,evaautomation/isl,crossbuild/isl,PollyLabs/isl,BenzoSM/isl,SaberMod/isl-current,jleben/isl,serge-sans-paille/isl,PollyLabs/isl,cfx-next/toolchain_isl-upstream,Distrotech/isl,cfx-next/toolchain_isl-upstream,serge-sans-paille/isl,cfx-next/toolchain_isl-upstream,Distrotech/isl,UBERTC/isl,nicolasvasilache/isl,inducer/isl-mirror,pierrotdelalune/isl,simbuerg/isl,VanirLLVM/toolchain_isl,inducer/isl-mirror,crossbuild/isl,Meinersbur/isl,jleben/isl,abduld/isl,BenzoSM/isl