Update project authors statements to Dartino

tests/unsorted/smi_mul_overflow_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';
 
 main() {
   var x1 = 1;
   var x2 = 2;
   Expect.equals(-1, -1 * x1);
   Expect.equals(-2, -1 * x2);
   Expect.equals(0x20000000, 0x20000000 * x1);
   Expect.equals(0x40000000, 0x20000000 * x2);
 }