Fixed enum binding support (issue #49)

test/com/google/gwt/inject/client/binding/FruitGinjector.java

 /*
  * Copyright 2008 Google Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  * use this file except in compliance with the License. You may obtain a copy of
  * the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
@@ skipping 26 matching lines @@
   /*@Named("id") byte getId();*/
 
   @Named("leaves") short getLeaves();
 
   @Named("eaten") boolean isEaten();
 
   @Named("name") String getName();
 
   @Named("color") Color getColor();
 
+  @Named("family") Fruit.Family getFamily();
+
   FruitGinjector getGinjector();
 }