Add alternative iterator implementation

json.h

@@ -3,6 +3,7 @@
  *
  * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd.
  * Michael Clark <michael@metaparadigm.com>
+ * Copyright (c) 2009 Hewlett-Packard Development Company, L.P.
  *
  * This library is free software; you can redistribute it and/or modify
  * it under the terms of the MIT license. See COPYING for details.
@@ -23,6 +24,7 @@ extern "C" {
 #include "json_util.h"
 #include "json_object.h"
 #include "json_tokener.h"
+#include "json_object_iterator.h"
 
 #ifdef __cplusplus
 }