title: Ant <copy todir> zipfileset with prefix
body: <p>Let's say that <code>C:/dir2/</code> has one file called <code>file2.txt</code>
  And that <code>C:/dir3/</code>has one file called <code>file3.txt</code></p>
  
  <p>This ant script:</p>
  
  <pre><code>&lt;copy todir="C:/dir1"&gt;
      &lt;zipfileset dir="C:/dir2" prefix="dirprefix2"/&gt;
      &lt;zipfileset dir="C:/dir3" prefix="dirprefix3"/&gt;
  &lt;/copy&gt;
  </code></pre>
  
  <p>copies the files to:</p>
  
  <pre><code>C:/dir1/file2.txt
  C:/dir1/file3.txt
  </code></pre>
  
  <p>But I wanted it to copy to:</p>
  
  <pre><code>C:/dir1/dirprefix2/file2.txt
  C:/dir1/dirprefix3/file3.txt
  </code></pre>
  
  <p>Anyone knows what I am doing wrong?</p>