Rename fletch -> dartino

tests/unsorted/messaging_test.dart

 // Copyright (c) 2014, 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 'dart:fletch';
+import 'dart:dartino';
 
 import 'package:expect/expect.dart';
 
 main() {
   Expect.equals(10, Fiber.fork(() => testDeliver(10)).join());
   Expect.equals(42, Fiber.fork(() => testDeliver(42)).join());
 
   Expect.equals(10, Fiber.fork(() => testSend(10)).join());
   Expect.equals(42, Fiber.fork(() => testSend(42)).join());
 }
@@ skipping 32 matching lines @@
   // We join the other fiber here, so we force it to
   // enqueue all the remaining messages.
   Expect.isNull(other.join());
 
   for (int i = split; i < n; i++) {
     Expect.equals(i, channel.receive());
     received++;
   }
   return received;
 }