Rename fletch -> dartino

tools/servicec/lib/src/resources/java/dartino/ListBuilder.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 ListBuilder extends Builder {
   public ListBuilder() { }
 
   public int length;
 
   Builder readListElement(Builder builder, int index, int size) {
     builder.segment = segment;
     builder.base = base + index * size;
     return builder;
   }
 }