* libgcc2.c (__empty): An empty function used by the C++ frontend for
	defaulting cleanup actions.

	* tree.c (save_tree_status, restore_tree_status): Save and restore
	temporary_firstobj, so that in progress objects that live on the
	temporary obstack are not reallocated, if we save and restore the
	tree status in their lifetime.

From-SVN: r10799