tree.c (build_vec_init_expr): Take complain parm.

	* tree.c (build_vec_init_expr): Take complain parm.
	(build_vec_init_elt): Likewise.  Free arg vector.
	(diagnose_non_constexpr_vec_init, build_array_copy): Adjust.
	* cp-tree.h (VEC_INIT_EXPR_SLOT): Use VEC_INIT_EXPR_CHECK.
	(VEC_INIT_EXPR_INIT): Likewise.
	Adjust build_vec_init_expr declaration.
	* init.c (perform_member_init): Adjust.

From-SVN: r173275