title: Correcting SVN copy/move
body: <p>Another developer on the project moved a versioned folder without properly doing it via SVN. So SVN shows a directory tree deleted, and another one created, and doesn't show that one was simply the result of a rename of the other. This screws with peg revisions, difs, and source history.</p>
  
  <p>Is there any way to fix this, for example via <code>svndump</code>?</p>
  
  <p>Basically, to mark <code>trunk/b</code> as a copy-from <code>trunk/a</code>.</p>