add doc/SubmittingPatches
add doc/SubmittingPatches

Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

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