Fix memory leak in DD XFAILs some interchange testcases.

Fix memory leak in DD XFAILs some interchange testcases.

2009-08-05  Konrad Trifunovic  <konrad.trifunovic@gmail.com>
	    Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-dependences.c (graphite_legal_transform_dr): Work on a
	copy of the dependence polyhedron.  Free the temporary objects.
	(graphite_carried_dependence_level_k): Free unused objects before
	returning.

	* testsuite/gcc.dg/graphite/interchange-1.c: XFAILed.
	* testsuite/gcc.dg/graphite/interchange-2.c: XFAILed.
	* testsuite/gcc.dg/graphite/interchange-3.c: XFAILed.
	* testsuite/gcc.dg/graphite/interchange-4.c: XFAILed.
	* testsuite/gcc.dg/graphite/interchange-7.c: XFAILed.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@150687 138bc75d-0d04-0410-961f-82ee72b054a4