cp-tree.h (unqualified_name_lookup_error): Declare it.

	* cp-tree.h (unqualified_name_lookup_error): Declare it.
	(begin_function_definition): Adjust prototype.
	* lex.c (unqualified_name_lookup_error): New function, split out
	from ...
	(do_identifier): ... here.
	* parse.y (parse_begin_function_definition): New function.
	(fn.def1): Use it.
	* semantics.c (begin_function_definition): Accept decl-specifiers
	and attributes as separate parameters.

From-SVN: r55372