bug#25190: Initialization of `dired-mode-map' in by the `dired-x' feature is not safe

[Drew Adams]

> > P.S. Just a side question: why `dired-x' is not yet merged into
> > dired'?
> 
> Since dired-x hasn't changed qualitatively in 5 years, neither has my
> answer to this question. :)
> 
> http://lists.gnu.org/archive/html/emacs-devel/2011-03/msg00718.html
> (Just IMO.)

Yes, well, those (such as Glenn and Stefan) in that thread who
claimed to want to keep only a bit of dired-x and toss the
rest, claiming that it is only "cruft" are also people who
have admitted that they hardly, if ever, use Dired.

There are plenty of other people, myself included, who use not
only dired.el but dired-x.el and dired-aux.el, all the time.

I don't think it's useful to rehash the previous thread,
which went nowhere, and certainly not here, in a bug thread
that is not related.

But we should not particularly be listening to non-users of
Dired about tossing parts of it out.  (Just IMO.)