bug#20481: 24.5; , Newlines in message-box output don't work on Windows

[Eli Zaretskii]

> Date: Thu, 12 Sep 2024 15:33:23 +0200
> From: Cecilio Pardo <cpardo@imayhem.com>
> Cc: Eli Zaretskii <eliz@gnu.org>, 20481@debbugs.gnu.org
> 
> On 12/09/2024 4:49, Po Lu wrote:
> > Thanks.  Following are a number of minor stylistic comments.
> 
> Sorry I missed those. They are corrected in the attached patch.

Thanks, now installed on the master branch (which will become Emacs 31).

FTR, I needed some additions because mingw.org's MinGW lacks some
stuff in its headers that the code used.  Please see that the result
still compiles with MinGW64.