re PR c++/25439 ("template<> int A<0>" accepted)

	PR c++/25439
	* decl.c (grokdeclarator): Remove dead code.
	* ptree.c (cxx_print_xnode): Handle BASELINK.
	* parser.c (make_id_declarator): Add sfk parameter.  
	(cp_parser_direct_declarator): Do not pass TYPE_DECLs to
	make_id_declarator.
	(cp_parser_declarator_id): Simplify BASELINKs here.
	(cp_parser_member_declaration): Adjust calls to
	make_id_declarator.
	PR c++/25439
	* g++.dg/parse/crash17.C: Adjust error markers.
	* g++.dg/template/error20.C: New test.

From-SVN: r109079