fractional doc clarification

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270093 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/CoreTasks/copy.html

@@ -31,7 +31,8 @@ To use a fileset, the <var>todir</var> attribute must be set.</p>
   <tr>
     <td valign="top">preservelastmodified</td>
     <td valign="top">Give the copied files the same last modified
-      time as the original files. Defaults to &quot;no&quot;.</td>
+      time as the original source files. Defaults to &quot;no&quot;.
+      [ignored on Java 1.1]</td>
     <td valign="top" align="center">No</td>
   </tr>
   <tr>