decl2.c: Include "timevar.h".

	* decl2.c: Include "timevar.h".
	(namespace_ancestor): Time name lookup.
	(add_using_namespace): Likewise.
	(lookup_using_namespace): Likewise.
	(qualified_lookup_using_namespace): Likewise.
	(decl_namespace): Likewise.
	(lookup_arg_dependent): Likewise.
	* lex.c (do_identifier): Likewise.
	(do_scoped_id): Likewise.
	* pt.c (lookup_template_class): Likewise.

From-SVN: r62892