Core 1402
cp/
	* call.c (joust): An implicitly deleted move function is
	worse than any non-deleted function.
	* method.c (process_subob_fn): No special rules for move.
	(synthesized_method_walk, implicitly_declare_fn): Likewise.
	Warn about virtual base with non-trivial move assignment.
	* cp-tree.h (struct lang_decl_fn): Remove suppress_implicit_decl.
	(FNDECL_SUPPRESS_IMPLICIT_DECL): Remove.
c-family/
	* c.opt (Wvirtual-move-assign): New.

From-SVN: r192813