isl_set_coefficients: rename "dim" variable to "space"
isl_set_coefficients: rename "dim" variable to "space"

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

crossbuild/isl,PollyLabs/isl,KangDroidSMProject/ISL,BenzoSM/isl,crossbuild/isl,BenzoSM/isl,SaberMod/isl-current,jleben/isl,simbuerg/isl,simbuerg/isl,BenzoSM/isl,crossbuild/isl,SaberMod/isl-current,BenzoSM/isl,abduld/isl,abduld/isl,evaautomation/isl,PollyLabs/isl,Distrotech/isl,tobig/isl,PollyLabs/isl,PollyLabs/isl,jleben/isl,UBERTC/isl,BenzoSM/isl,jleben/isl,Meinersbur/isl,inducer/isl-mirror,Meinersbur/isl,jleben/isl,UBERTC/isl,tobig/isl,evaautomation/isl,UBERTC/isl,Meinersbur/isl,KangDroidSMProject/ISL,SaberMod/isl-current,simbuerg/isl,KangDroidSMProject/ISL,simbuerg/isl,evaautomation/isl,evaautomation/isl,inducer/isl-mirror,Distrotech/isl,inducer/isl-mirror,inducer/isl-mirror,SaberMod/isl-current,simbuerg/isl,Distrotech/isl,abduld/isl,PollyLabs/isl,crossbuild/isl,KangDroidSMProject/ISL,nicolasvasilache/isl,jleben/isl,UBERTC/isl,Distrotech/isl,nicolasvasilache/isl,nicolasvasilache/isl,KangDroidSMProject/ISL,inducer/isl-mirror,abduld/isl,tobig/isl,nicolasvasilache/isl,Meinersbur/isl,nicolasvasilache/isl,tobig/isl,Distrotech/isl