bug#25542: 25.1; Restoring the frame from fullscreen to maximized

[Eli Zaretskii]

> Cc: Lars Magne Ingebrigtsen <larsi@gnus.org>, 25542@debbugs.gnu.org,
>  Noam Postavsky <npostavs@users.sourceforge.net>
> From: Ken Brown <kbrown@cornell.edu>
> Date: Fri, 11 Sep 2020 16:16:09 -0400
> 
> Patch attached (under your name).  Please check it and see if the commit 
> message 
> and comment change are OK.
> 
> Eli and Lars, I think this should go to master rather than the emacs-27 
> branch, 
> since there's too much that we don't understand about the fix.  Do you agree?

Yes, I definitely agree: the use case is rare and the fix is not
self-evident.