Rename fletch -> dartino

tests/unsorted/messaging_program_gc_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.
 //
-// FletchOptions=-Xgc-on-delete
+// DartinoOptions=-Xgc-on-delete
 
 import 'dart:async';
-import 'dart:fletch';
+import 'dart:dartino';
 
 import 'package:expect/expect.dart';
 
 List constList = const [1, 2, 3];
 
 noop() { }
 
 main() {
   var input = new Channel();
   var port = new Port(input);
@@ skipping 18 matching lines @@
   replyPort.send(port);
   replyPort.send(constList);
   // Spin up a process that will die immediately to force a program GC.
   Process.spawnDetached(noop);
   Expect.equals(input.receive(), constList);
   for (int i = 0; i < 10; i++) {
     Process.spawnDetached(noop);
     replyPort.send(i);
   }
 }