isl_input.c: extract out set_current_line_col
isl_input.c: extract out set_current_line_col

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

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