isl_basic_map_from_multi_aff: check that input actually lives in map space
isl_basic_map_from_multi_aff: check that input actually lives in map space

Signed-off-by: Sven Verdoolaege <235c10dd23b819f81cdc9756a251746bc184cab6@gmail.com>

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