PR c++/8442, c++/8806

	PR c++/8442, c++/8806
	* decl.c (qualify_lookup): Accept TEMPLATE_DECL if types are
	preferred.
	(check_elaborated_type_specifier): Add allow_template_p
	parameter.  Check tag mismatch and class template.
	(xref_tag): Add template_header_p parameter.  Add assertion
	that name is an IDENTIFIER_NODE.  Remove implicit typename
	warning.  Simplify lookup process if globalize is true.
	(cxx_init_decl_processing): Adjust call to xref_tag.
	(xref_tag_from_type): Likewise.
	* decl2.c (handle_class_head): Likewise.
	* parser.c (cp_parser_elaborated_type_specifier,
	cp_parser_class_head): Likewise.
	* rtti.c (init_rtti_processing, build_dynamic_cast1,
	tinfo_base_init, emit_support_tinfos): Likewise.
	* class.c (is_base_of_enclosing_class): Remove.
	* pt.c (convert_template_argument): Don't accept RECORD_TYPE as
	template template argument.
	* cp-tree.h (xref_tag): Adjust declaration.
	(is_base_of_enclosing_class): Remove.
	* NEWS: Document template template argument change.

	* g++.dg/template/elab1.C: Likewise.
	* g++.dg/template/type2.C: Likewise.
	* g++.dg/template/ttp3.C: Adjust expected error message.
	* g++.old-deja/g++.law/visibility13.C: Likewise.
	* g++.old-deja/g++.niklas/t135.C: Likewise.
	* g++.old-deja/g++.pt/ttp41.C: Likewise.
	* g++.old-deja/g++.pt/ttp43.C: Use qualified name for template
	template argument.
	* g++.old-deja/g++.pt/ttp44.C: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@70048 138bc75d-0d04-0410-961f-82ee72b054a4