invoke.texi (Wnon-virtual-dtor): Adjust documentation.

invoke.texi (Wnon-virtual-dtor): Adjust documentation.

	* doc/invoke.texi (Wnon-virtual-dtor): Adjust documentation.
	(Weffc++): Remove Scott's numbering, merge lists and reference
	Wnon-virtual-dtor.

	c-family/
	* c.opt (Wnon-virtual-dtor): Auto set when Weffc++.

	cp/
	* class.c (accessible_nvdtor_p): New.
	(check_bases): Don't check base destructor here ...
	(check_bases_and_members): ... check them here.  Trigger on
	Wnon-virtual-dtor flag.
	(finish_struct_1): Use accessible_nvdtor_p.

	testsuite/
	* g++.dg/warn/Wnvdtor.C: Add non-polymorphic case.
	* g++.dg/warn/Wnvdtor-2.C: New.
	* g++.dg/warn/Wnvdtor-3.C: New.
	* g++.dg/warn/Wnvdtor-4.C: New.
	* g++.dg/warn/Weff1.C: Delete.
	* g++.old-deja/g++.benjamin/15309-1.C: Delete.
	* g++.old-deja/g++.benjamin/15309-2.C: Delete.

From-SVN: r209056