bug#6430: Emacs WINDOWS truncates exit status of processes to 8 bits

[Eli Zaretskii]

> From: Óscar Fuentes <ofv@wanadoo.es>
> Cc: npostavs@users.sourceforge.net,  6430@debbugs.gnu.org
> Date: Thu, 16 Jun 2016 06:13:46 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > We only solve real-life problems in Emacs, not academical ones.  Life
> > is too hard for anything else.
> 
> The MS toolchain (to name just a case that we could expect to be used
> from Emacs) outputs quite a few exit codes larger than 255.

Any pointers to where these values are documented?