re PR c++/25552 (Invalid destructor name accepted in friend declaration)

	PR c++/25552
	* parser.c (cp_parser_unqualified_id): Check that destructor name
	and scope match.
	* call.c (check_dtor_name): Do not expect a BIT_NOT_EXPR.
	Adjust comment.  Return early if possible.
	Use same_type_p to compare types.
	* typeck.c (lookup_destructor): Adjust call to check_dtor_name.

	* g++.dg/parse/dtor8.C: New test.

From-SVN: r110168