add BCEL to the list of required libraries.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270073 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/install.html

@@ -337,6 +337,11 @@ Installing Ant / Optional Tasks</a> section above.</p>
     <td><a href="http://www.savarese.org/oro/downloads/index.html#NetComponents"
            target="_top">www.savarese.org/oro/downloads</a></td>
   </tr>
+  <tr>
+    <td>bcel.jar</td>
+    <td>classfileset data type<!-- and optional depend task -->.</td>
+    <td><a href="http://jakarta.apache.org/bcel/" target="_top">jakarta.apache.org/bcel/</a></td>
+  </tr>
 </table>
 <br>
 <hr>

lib/optional/README

@@ -1,2 +1,3 @@
 The file junit.jar is version 3.7 of JUnit, see the file LICENSE.junit
-for the terms of distribution.
+for the terms of distribution.  For more information about JUnit or
+the latest release, see <http://www.junit.org/>.