Doug informed me that the way I had restored the "lost" version histories was
wrong, because `cvs checkout's of old versions of nmh wouldn't work properly.
It occurs to me that this could be fixed by simply deleting those tags in the
new-location *,v files, but oh well. I'm putting everything back to the way
Doug originally had it. To get the old version history for a file that used to
be in the top directory, you'll need to "blindly" do a `cvs log' there (even
though you won't have a local copy of the file in that directory). `cvs diff'
will no longer be able to diff pre-move versions vs. post-move versions --
you'll have to do a lot of manual gyrations with `cvs checkout' and then use
`diff'.