bug#33442: 26.1.90; Cairo side-by-side windows scrolling fix should be cherry-picked

[Eli Zaretskii]

> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Thu, 22 Nov 2018 16:05:18 +0200
> Cc: 33442@debbugs.gnu.org
> 
> Thanks for that. I've just tried a --with-cairo build with
> 
>      GDK_SCALE=1 emacs
> 
> and it seems to work well, (even) without your extra patch. Aside from 
> the expected problems with toolbar icons and scrollbar (too small), 
> which I don't use anyway.
> 
> So maybe we shouldn't think of the Cairo build as too broken anymore.

How many users will agree to demote the DPI just to have the Cairo
build working?  IOW, is the above a viable solution, or is it
something many users will regard as unacceptable?