2012-12-15  Richard Guenther  <rguenther@suse.de>

	Revert
	PR lto/48437
	* lto-streamer-out.c (tree_is_indexable): Exclude block-local
	extern declarations.

	PR lto/48508
	PR lto/48437
	* tree-streamer-out.c (streamer_write_chain): Stream DECL_EXTERNAL
	VAR_DECLs and FUNCTION_DECLs locally.

	* g++.dg/lto/pr48508-1_0.C: New testcase.
	* g++.dg/lto/pr48508-1_1.C: Likewise.

From-SVN: r182358