* decl.c (create_array_type_for_decl): Only warn about invalid
	C++1y VLA if flag_iso or warn_vla>0.
	(grokdeclarator): Likewise.
	* pt.c (tsubst): Likewise.
	* semantics.c (finish_decltype_type): Likewise.
	* typeck.c (cxx_sizeof_or_alignof_type): Likewise.
	(cp_build_addr_expr_1): Likewise.
	* init.c (build_new_1): Improve diagnostics.

From-SVN: r208411