Update project authors statements to Dartino

tests/unsorted/17_test.dart

-// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 import 'package:expect/expect.dart';
 
 foo([x = 3]) {
   return x;
 }
 
 void main() {
   var f = foo;
   Expect.equals(3, f());
   Expect.equals(2, f(2));
 }