title: svn subtree, update from one repo, commit to other
body: <p>A have a big project in a SVN repository. I would like to use some modules of the project in other applications, so I thought about checkout them from my main SVN repository so I can keep my code updated.</p>
  
  <p>How can I "export" one folder / module of my repository so I can checkout only that module to other project? My other projects where I want to include that module are also in their own SVN repository.</p>
  
  <p>In resume, I would like to be able to do SVN update to the main repo but do the commits to the project repo.</p>
  
  <p>I hope its clear what I want to do.</p>
  
  <p>In response to DavidW anwser:</p>
  
  <ul>
  <li>I have one repository with multiple projects, but i might change this
  if necessary.  </li>
  <li>I want to shere the source code. its a php project. I 
  am forking the module. (I have a global generic project and if my<br>
  client needs some specific functions,  </li>
  <li>I want to create a separate project for that client (separate in svn also). But i would like to<br>
  have a way to merge some changes made in the main project to the<br>
  client project. (ex: global bug fixes or funcionality).</li>
  </ul>