bug#47558: 28.0.50; dlopen 'image not found' gccemacs native-lisp macos

[Eli Zaretskii]

> From: Andrea Corallo <akrl@sdf.org>
> Cc: Eli Zaretskii <eliz@gnu.org>, bryan.m.obrien@gmail.com,
>         47558@debbugs.gnu.org
> Date: Tue, 06 Apr 2021 19:26:16 +0000
> 
> On this subject I just realized that there we used concat in place of
> `expand-file-name' and fixed that with 6568198213.

I needed to revert that part, because we cannot call expand-file-name
so early into startup, at least not on MS-Windows.  Was there some
real problem you saw that was caused by using concat2 there?