* c.opt: Add -fno-deduce-init-list.
	* pt.c (get_pattern_parm): New.
	(listify): Split out from...
	(listify_autos): ...here.
	(unify): Deduce std::initializer_list for T.
	* call.c (build_over_call): Warn about it.

From-SVN: r151867