* class.c (build_vbase_path): Simplify.
	(dfs_propagate_binfo_offsets): New function.
	(propagate_binfo_offsets): Use it.
	(remove_base_field): Simplify.
	(dfs_set_offset_for_vbases): Remove.
	(dfs_set_offset_for_shared_vbases): New function.
	(dfs_set_offset_for_unshared_vbases): Likewise.
	(layout_virtual_bases): Use them.
	(layout_basetypes): Don't call propagate_binfo_offsets.
	* search.c (dfs_get_vbase_types): Clone completely fresh binfos
	for the vbases.

From-SVN: r31316