bug#43725: 28.0.50; Include feature/native-comp into master

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: 43725@debbugs.gnu.org,  Eli Zaretskii <eliz@gnu.org>,
>   monnier@iro.umontreal.ca
> Date: Thu, 26 Nov 2020 11:10:11 +0100
> 
> > I was wondering: is there anything I can do to help the progress of
> > this?
> 
> There's a lot of code, and very little of it is in areas where I have
> much knowledge, so I'm not much help here, I'm afraid.  (I think I read
> about a fifth of the diff and didn't have any comments.)
> 
> I wonder whether Stefan of Eli has found time to take a look at it?

It's on my todo, so I will get to it eventually.