re PR c++/5369 (template member friend declaration not honored)

re PR c++/5369 (template member friend declaration not honored)

	PR c++/5369
	* friend.c (is_friend): Handle member function of a class
	template as template friend.
	(do_friend): Likewise.
	* decl2.c (check_classfn): Add template_header_p parameter.
	* decl.c (start_decl): Adjust check_classfn call.
	(grokfndecl): Likewise.
	* pt.c (is_specialization_of_friend): New function.
	(uses_template_parms_level): Likewise.
	(push_template_decl_real): Use uses_template_parms_level.
	(tsubst_friend_function): Adjust check_classfn call.
	* cp-tree.h (check_classfn): Adjust declaration.
	(uses_template_parms_level): Add declaration.
	(is_specialization_of_friend): Likewise.

	* g++.dg/template/memfriend1.C: New test.
	* g++.dg/template/memfriend2.C: Likewise.
	* g++.dg/template/memfriend3.C: Likewise.
	* g++.dg/template/memfriend4.C: Likewise.
	* g++.dg/template/memfriend5.C: Likewise.
	* g++.dg/template/memfriend6.C: Likewise.
	* g++.dg/template/memfriend7.C: Likewise.
	* g++.dg/template/memfriend8.C: Likewise.
	* g++.old-deja/g++.pt/friend44.C: Remove a bogus error.

From-SVN: r73833