* cgraph.c: Include lto-streamer.h
	(change_decl_assembler_name): Work when assembler name hash is at place.
	(cgraph_make_decl_local): When localizing COMDAT symbol at WPA stage, be
	sure to rename it to avoid name clash.
	* ipa.c (cgraph_externally_visible_p, function_and_variable_visibility):
	Localize hidden symbols only when locally defined.

From-SVN: r162211