title: ANT uses wrong rm version
body: <p>I want to execute ANT delete target, so that I can delete all files in the directory that mach some criteria:</p>
  
  <pre><code>&lt;delete quiet="true"&gt;
      &lt;fileset dir="${java.io.tmpdir}" includes="soapirp*.log*"/&gt;
  &lt;/delete&gt;
  </code></pre>
  
  <p>it does not work, I think it happens because ant is trying to invoke unix rm -f command which supposed to delete file without asking me to confirm the deletion, but this does not work, i tested it by running </p>
  
  <pre><code>rm - f filename 
  </code></pre>
  
  <p>it still prompts me for the confirmation the only way I made it work by running:</p>
  
  <pre><code>/usr/bin/rm -f filename 
  </code></pre>
  
  <p>then eveyting works as expected , I need to tell the ant to use the different version of rm I guess but how ??</p>