re PR c++/4403 (incorrect class becomes a friend in template)

re PR c++/4403 (incorrect class becomes a friend in template)

	PR c++/4403
	PR c++/9783, DR433
	* name-lookup.c (pushtag): Skip template parameter scope when
	scope is ts_global.  Don't push tag into template parameter
	scope.
	* pt.c (instantiate_class_template): Reorder friend class
	template substitution to handle non-dependent friend class
	that hasn't been previously declared.

	* g++.dg/template/friend34.C: New test.
	* g++.dg/template/friend35.C: Likewise.
	* g++.old-deja/g++.pt/inherit2.C: Remove XFAIL's.

From-SVN: r96432