explain build.sysclasspath only once. PR 39338

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@687371 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/running.html

@@ -403,13 +403,9 @@ org.apache.tools.ant.Executor implementation specified here.
 </tr>
 <tr>
   <td><code>build.sysclasspath</code></td>
-  <td>"only", something else</td>
-  <td>only: current threads get the actual class loader
-      (AntClassLoader.setThreadContextLoader()).
-      else: use core loader as default (ComponentHelper.initTasks()). Disable
-      changing the classloader (oata.taskdefs.Classloader.execute() experimental
-      task).
-      <!-- somewhere documented in the manual?? -->
+  <td>see <a href="sysclasspath.html">its dedicated page</a>, no
+    default value</td>
+  <td>see <a href="sysclasspath.html">its dedicated page</a></td>
   </td>
 </tr>
 <tr>