* cp-names.y (ext_name): Remove.

	* cp-names.y (ext_name): Remove.
	(colon_ext_only, ext_only_name): New non-terminals.
	(colon_ext_name): Use colon_ext_only.
	(declarator_1, direct_declarator_1): New non-terminals.
	('('): Remove %right precedence.
	(result): New non-terminal.
	(start): Assign to $$.  Use declarator_1.  Handle functions
	without return types.
	(template_arg): Use start instead of colon_ext_name.
	(yylex): Fix typo in "char" case.
	(yyerror): Add newline.
	(main): Behave like c++filt when started with no arguments.