title: SVN updating a common code repository OUTSIDE my repository's directory
body: <p>We have a repository of common code on svn that we use for many client CMSs. Lets call the repository CMS. Then for each client, we create a separate repository of just their files, for example CLIENT1. Every time I do an update on my local machine, I check out CMS and CLIENT1 separately.</p>
  
  <p>I know that Tortoise has a command svn:Externals so that I can create a local copy of CMS in a subdirectory of CLIENT1, but we might have 20 clients, and I don't want to keep 20 copies of the same common code. Is there a way to keep a single copy of the CMS repository on my local machine outside the CLIENT1 directory, and to tell tortoise to update that repository ALSO, every time I do an update to CLIENT1, etc?</p>
  
  <p>If it's relevant, I'm on a windows 7 box and SVN is on a linux box.</p>