isl_input.c: read_tuple_space: call isl_space_product on set spaces
isl_input.c: read_tuple_space: call isl_space_product on set spaces

Technically, isl_space_range_product can only be called on map spaces,
even though internally isl_space_product currently actually calls
isl_space_range_product in case of set spaces.

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

tobig/isl,Meinersbur/isl,inducer/isl-mirror,Meinersbur/isl,inducer/isl-mirror,PollyLabs/isl,inducer/isl-mirror,tobig/isl,PollyLabs/isl,nicolasvasilache/isl,inducer/isl-mirror,Meinersbur/isl,nicolasvasilache/isl,nicolasvasilache/isl,nicolasvasilache/isl,nicolasvasilache/isl,PollyLabs/isl,Meinersbur/isl,PollyLabs/isl,inducer/isl-mirror,PollyLabs/isl,tobig/isl,tobig/isl