bug#29423: 27.0.50; ls-lisp does not handle -F switch properly

[Eli Zaretskii]

> From: Michael Albinus <michael.albinus@gmx.de>
> Cc: 29423@debbugs.gnu.org
> Date: Sat, 25 Nov 2017 09:59:52 +0100
> 
> > We can install this on the release branch, unless the original problem
> > with Tramp exists only on master.  Let me know.
> 
> Yes, please. The problem does not happen in existing Tramp, but in the
> not published yet tramp-archive.el I'm working on. It shall support as
> many older Emacsen as the existing Tramp; if it would be fixed in Emacs
> 26 it would be great.

Done.