Rename fletch -> dartino

tests/unsorted/messaging_latency_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';
 
 const int MESSAGES = 100000;
 
 void main() {
   testIntraprocessChannel();
   testIntraprocessPort();
   testInterprocess();
 }
@@ skipping 71 matching lines @@
 }
 
 // -----------------------------------------------------------
 
 void printTiming(String banner, Stopwatch watch) {
   int tus = (watch.elapsedMicroseconds * 10) ~/ (2 * MESSAGES);
   int us = tus ~/ 10;
   int fraction = tus % 10;
   print('$banner: $us.$fraction us.');
 }