* tree-outof-ssa.c (_elim_graph): Change the type of nodes and
	const_copies to VEC(tree,heap)*.
	(new_elim_graph, delete_elim_graph, elim_graph_size,
	elim_graph_add_node, eliminate_build, eliminate_phi): Use VEC
	instead of VARRAY.

From-SVN: r99497