cpp/python: export documented functions to construct sets from isl_aff
cpp/python: export documented functions to construct sets from isl_aff

The following documented operations are exported:

	isl_aff_eq_set
	isl_aff_ne_set
	isl_aff_le_set
	isl_aff_lt_set
	isl_aff_ge_set
	isl_aff_gt_set

The function variants that produce basic sets are not yet exported, as
it is unclear if there are common use cases for them.

Signed-off-by: Tobias Grosser <059b8b880f8441509ec8a65b50b4c6ae74ebea76@grosser.es>
Reviewed-by: Nicolas Vasilache <05af740c82c817c8c65f9e07d08a1b42ef386036@gmail.com>
Reviewed-by: Oleksandr Zinenko <23146e47643dcd4e8b0c420d8969a2e7f4d93dcc@inria.fr>
Signed-off-by: Sven Verdoolaege <235c10dd23b819f81cdc9756a251746bc184cab6@gmail.com>

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