bug#58318: 28.2; Emacs installed from package won't work with MinGW

[Eli Zaretskii]

> From: Corwin Brust <corwin@bru.st>
> Date: Fri, 7 Oct 2022 10:52:04 -0500
> Cc: Eli Zaretskii <eliz@gnu.org>, larsi@gnus.org, bartosz.bubak@gmail.com, 
>       58318@debbugs.gnu.org
> 
> On Fri, Oct 7, 2022 at 9:35 AM Andrea Corallo <akrl@sdf.org> wrote:
> >
> > >
> > > OK, then let's go for precompiling all the trampolines AOT.
> >
> > The only downside might be build time, compiling a trampoline is quick,
> > 1000+ maybe not so much.
> >
> 
> If this will mostly affect those building Windows binaries *for
> redistribution*, perhaps it's not a big problem?  Based on my own very
> limited testing, it's fine for me.

Right, so I think we need a special Makefile target to produce those
compiled trampolines (something like "make trampolines"), and that
target should be only used manually when building a binary
distribution, not when building the release tarball for use on the
same machine where it is built.

Andrea, could you please come up with a patch for that?  Thanks.