title: Appliying patch in drupal modules
body: <p>I have an installed drupal module : revioning. 
  To add some functionalities, someone submit a patch file in drupal site here:</p>
  
  <p><a href="http://drupal.org/node/938074" rel="nofollow">http://drupal.org/node/938074</a></p>
  
  <p>My question is how to apply patches???</p>
  
  <p>My server is linux centos.</p>