isl_tab_pip.c: isl_context_op.add_div: return isl_bool
isl_tab_pip.c: isl_context_op.add_div: return isl_bool

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

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