documenting classpathref

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@272089 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/CoreTasks/sql.html

@@ -93,6 +93,11 @@ and <b>abort</b> execution and transaction and fail task.</p>
   <td width="78%" valign="top">Classpath used to load driver</td>
   <td width="10%" valign="top">No (use system classpath)</td>
 </tr>
+  <tr>
+    <td width="12%" valign="top">classpathref</td>
+    <td width="78%" valign="top">The classpath to use, given as a <a href="../using.html#references">reference</a> to a path defined elsewhere.</td>
+  <td width="10%" valign="top">No (use system classpath)</td>
+  </tr>
 <tr>
   <td width="12%" valign="top">onerror</td>
   <td width="78%" valign="top">Action to perform when statement fails: continue, stop, abort</td>