isl_union_pw_*_extract: ignore parameters in space argument
isl_union_pw_*_extract: ignore parameters in space argument

This is similar to the change in 3c1f9ef (isl_union_map_extract_map:
ignore parameters in space argument, Thu Apr 12 14:08:39 2012 +0200).

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

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