title: How can I see a list of all files that are different between two Hg repositories?
body: <p>I've got a repository that has a lot of working code. Another developer on my team went without any updates for a while and then committed about 5 changesets. So, now we have two heads that are nearly two weeks apart. The tip doesn't work, but my changeset does.</p>
  
  <p>I want to see what the differences are between the two repositories without having to merge them (because I'm not sure I want to do that). </p>