Rename fletch -> dartino

tools/servicec/lib/src/resources/java/dartino/MessageBuilder.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;
 
 public class MessageBuilder {
   public MessageBuilder(int space) {
     segments = 1;
     first = new BuilderSegment(this, 0, space);
     last = first;
   }
 
   public BuilderSegment first() { return first; }
 
@@ skipping 26 matching lines @@
     BuilderSegment segment = new BuilderSegment(this, segments++, capacity);
     last.setNext(segment);
     last = segment;
     return segment;
   }
 
   private BuilderSegment first;
   private BuilderSegment last;
   private int segments;
 };