bug#36357: Wrong Ghostscript program name on MS Win

[Eli Zaretskii]

> From: Tassilo Horn <tsdh@gnu.org>
> Cc: Arash Esbati <arash@gnu.org>,  36357@debbugs.gnu.org, Eli Zaretskii
>  <eliz@gnu.org>
> Date: Tue, 21 Apr 2020 20:34:41 +0200
> 
> > PS If it's alright could it be installed in 27.1?  It's not that big
> > of a change.
> 
> I tend to agree but that's to be decided by Eli (in Cc).

I don't really understand how changing a defcustom's value can be
urgent, but go for it.