title: git difftool to give directory compare?
body: <p>Is it possible to get the git difftool command to open a directory compare between the changed files and the staging/checked files?</p>
  
  <p>So ideally, if 2 files have changed, they would be the only 2 shown, but within a directory compare.</p>
  
  <p>I've read posts about getting git to give all file diffs in parallel, so tools like BeyondCompare has all <a href="https://stackoverflow.com/questions/1220309/git-difftool-open-all-diff-files-immediately-not-in-serial">the diffs in tabs</a>, but im not happy with that!</p>
  
  <p>One could pull a copy of the changed files from staging/checked in files into a temp folder, and then open that up. Is that the only option?</p>