* cp-tree.h (LOOKUP_TEMPLATES_EXPECTED): Remove.
	(lookup_name_namespace_only): Likewise.
	(begin_only_namespace_names): Likewise.
	(end_only_namespace_names): Likewise.
	* decl.c (only_namespace_names): Remove.
	(qualify_lookup): Do not check LOOKUP_TEMPLATES_EXPECTED.
	(lookup_name_real): Do not check only_namespace_names.
	(lookup_name_namespace_only): Remove.
	(begin_only_namespace_names): Likewise.
	(end_only_namespace_names): Likewise.
	* parser.c (cp_parser_nested_name_specifier_opt): Handle erroneous
	nested-name-specifiers more gracefully.
	(cp_parser_class_or_namespace_name): Avoid looking up namespace
	names when they cannot possibly appear.
	(cp_parser_template_name): Adjust call to cp_parser_lookup_name.
	(cp_parser_elaborated_type_specifier): Likewise.
	(cp_parser_namespace_name): Only look for namespace names.
	(cp_parser_lookup_name): Add is_namespace parameter.
	(cp_parser_lookup_name_simple): Adjust call to
	cp_parser_lookup_name.

	* g++.dg/parse/namespace1.C: New test.

From-SVN: r60729