Remove .svn folders

This is just another svn hack. On the Mac, when copying a Keynote/Pages/Numbers or similar document that is under subversion control, you also copy all its .svn directories. A similar problem to the one I described in this post. Again, a litte shell script can help here. svnCleanAllSvnFolders simply removes all .svn folders inside the current directory—if you call it with "yes" as a parameter; otherwise it just prints out what it would remove.