title: Checkstyle: Results file not being generated.
body: <p>I am running <code>checkstyle</code> in an ANT task: </p>
  
  <pre><code>&lt;taskdef resource="checkstyletask.properties" classpath="checkstyle-5.5//checkstyle-5.5-all.jar"/&gt; 
  &lt;checkstyle config="checkstyle-5.5/sun_checks.xml" failOnViolation="false"&gt;
    &lt;fileset dir="src/net" includes="**/*.java"/&gt;
  &lt;/checkstyle&gt;
  </code></pre>
  
  <p>Anyways, the <code>checkstyle</code> is certainly running; I'm seeing a trememndous amount of output at the console. However, I do not see a <code>checkstyle-results.xml</code> file as output.  </p>
  
  <p>Of course, I'm assuming this is a severe error, and that <code>checkstyle-results.xml</code> is ALWAYS produced when checkstyle runs, by default. Is that correct?  I believe that the results.xml file is required by Jenkins or Hudson CI plugins as well.</p>