Add new serialization API classes.

js/rhino/docs/api.html

@@ -56,6 +56,15 @@ for use by JavaScript.</li>
 <a href="org/mozilla/javascript/ClassOutput.html">ClassOutput</a> - Interface
 embedders can implement in order to control the placement of generated
 class bytecodes.</li>
+
+<li>
+<a href="org/mozilla/javascript/ScriptableOutputStream.html">ScriptableOutputStream</a> - This stream can be used to serialize JavaScript objects and functions.
+</li>
+
+<li>
+<a href="org/mozilla/javascript/ScriptableInputStream.html">ScriptableInputStream</a> - This stream can be used to deserialize JavaScript objects and functions.
+</li>
+
 </ul>
 
 <h4>