[FIXED JENKINS-9521] record the change in changelog

changelog.html

@@ -55,6 +55,9 @@ Upcoming changes</a>
 <!-- Record your changes in the trunk here. -->
 <div id="trunk" style="display:none"><!--=TRUNK-BEGIN=-->
 <ul class=image>
+  <li class=rfe>
+    Exploit commons-codec for Base64 encoding rather than proprietary sun.misc.BASE64Encoder
+    (<a href="http://issues.jenkins-ci.org/browse/JENKINS-9521">issue 9521</a>)
   <li class=>
 </ul>
 </div><!--=TRUNK-END=-->