2011-10-16  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* frontend-passes.c (current_ns):  Make static.
	(create_var):  Note parent of newly created namespace.
	(optimize_namespace):  Don't wak sibling namespaces
	if they are EXEC_BLOCK because this is handled...
	(gfc_code_walker):  ... here.  Also walk ASSOCIATE lists.

From-SVN: r180063