Add PDR->nb_subscripts.

Add PDR->nb_subscripts.

2009-08-11  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-dependences.c (dependence_polyhedron_1): Replace
	pdr_nb_subscripts with PDR_NB_SUBSCRIPTS.
	(graphite_legal_transform_dr): Same.
	(graphite_carried_dependence_level_k): Same.
	* graphite-poly.c (new_poly_dr): Add a parameter nb_subscripts.
	Initialize PDR_NB_SUBSCRIPTS.
	(print_pdr_access_layout): Replace pdr_nb_subscripts with
	PDR_NB_SUBSCRIPTS.
	* graphite-poly.h (struct poly_dr): Add nb_subscripts field.
	(PDR_NB_SUBSCRIPTS): New.
	(pdr_nb_subscripts): Removed.
	(pdr_dim): Simplified.
	* graphite-sese-to-poly.c (build_poly_dr): Replace pdr_nb_subscripts
	with PDR_NB_SUBSCRIPTS.

From-SVN: r150690