isl_output.c: print_constraint: rename "dim" to "space"
isl_output.c: print_constraint: rename "dim" to "space"

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

Distrotech/isl,Meinersbur/isl,Distrotech/isl,PollyLabs/isl,BenzoSM/isl,nicolasvasilache/isl,Meinersbur/isl,tobig/isl,inducer/isl-mirror,Distrotech/isl,nicolasvasilache/isl,tobig/isl,BenzoSM/isl,PollyLabs/isl,UBERTC/isl,inducer/isl-mirror,UBERTC/isl,nicolasvasilache/isl,BenzoSM/isl,nicolasvasilache/isl,PollyLabs/isl,PollyLabs/isl,nicolasvasilache/isl,inducer/isl-mirror,Distrotech/isl,UBERTC/isl,tobig/isl,BenzoSM/isl,Meinersbur/isl,UBERTC/isl,Meinersbur/isl,inducer/isl-mirror,tobig/isl,PollyLabs/isl,Distrotech/isl,BenzoSM/isl,inducer/isl-mirror