re PR c++/14008 (Confusing diagnostic when omitting a template parameter)

re PR c++/14008 (Confusing diagnostic when omitting a template parameter)

	PR c++/14008
	* parser.c (cp_parser_diagnose_invalid_typename): Removed parsing
	code, only emits the diagnostic now. Added lookup of the identifier
	and support for qualified ids.
	(cp_parser_parse_and_diagnose_invalid_type_name): New function.
	Parse an (invalid) type name as id-expression within a declarator.
	(cp_parser_simple_declaration): Use it.
	(cp_parser_member_declaration): Likewise.
	(cp_parser_make_typename_type): New function. Handle errors through
	cp_parser_diagnose_invalid_typename.
	(cp_parser_elaborated_type_specifier): Use it.

From-SVN: r77323