error.c (dump_function_decl): Don't print the argument types for a function when the verbosity level is negative.

	* error.c (dump_function_decl): Don't print the argument types for
	a function when the verbosity level is negative.
	* call.c (build_over_call): Check format attributes at call-time.
	* pt.c (tsubst_copy): Fix comment.
	(unify): Don't allow unification with variable-sized arrays.
	* semantics.c (finish_stmt_expr): When processing a template make
	the BIND_EXPR long-lived.

From-SVN: r24788