bug#41852: 27.0.50; text-scale commands don't scale header of tabulated-list-mode

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Date: Mon, 19 Oct 2020 15:41:48 -0700
> Cc: thomas.hisch@ims.co.at, 41852@debbugs.gnu.org
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Can we continue supporting text-scale-mode-remapping in
> > text-scale-mode--remappings?  I'd like to avoid backward-incompatible
> > changes if possible.
> 
> Do you mean something like this?

Yes.  Except that now I'm asking whether we need to obsolete the
variable.  is that just because of the name?