Rename fletch -> dartino

tools/servicec/lib/src/resources/java/dartino/MessageReader.java

 // 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.
 
-package fletch;
+package dartino;
 
 class MessageReader {
   public MessageReader(byte[][] rawSegments) {
     int length = rawSegments.length;
     segments = new Segment[length];
     for (int i = 0; i < length; i++) {
       segments[i] = new Segment(this, rawSegments[i]);
     }
   }
 
   public int segmentCount() { return segments.length; }
   public Segment getSegment(int id) { return segments[id]; }
 
   private Segment[] segments;
 }