bug#25875: 26.0.50; Hang logging out of MS-Windows

[Eli Zaretskii]

> From: Richard Copley <rcopley@gmail.com>
> Date: Mon, 27 Feb 2017 19:46:21 +0000
> Cc: Eli Zaretskii <eliz@gnu.org>, 25875@debbugs.gnu.org
> 
> > Bug#23483.
> 
> That's not a real issue, in my opinion. It's already covered,
> by autosave.

I don't think it is, because when WM_ENDSESSION comes in, Emacs will
be terminated without giving it a chance to auto-save.

Ken's change was meant to delay the shutdown long enough for Emacs to
exit in an orderly fashion.  The idea of the design is correct, IMO,
it's just that we should avoid the hang.