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

[Pip Cet]

On Mon, Feb 22, 2021 at 8:09 PM Andrea Corallo via Bug reports for GNU
Emacs, the Swiss army knife of text editors <bug-gnu-emacs@gnu.org>
wrote:
> Eli Zaretskii <eliz@gnu.org> writes:
> >> From: Andrea Corallo <akrl@sdf.org>
> > Yes, '--with-native-comp' sounds better.  Maybe even
> > '--with-native-compilation', even though it's longer.  (But since this
> > option will become ON by default, users will not have to type it in
> > most cases.)
>
> I pushed the change for having '--with-native-comp' but coming here to
> acknowledge that I recalled that also '--with-native-compilation' was
> suggested.  Cause I think is important to change it only once I reverted
> the commit.

I'm not sure about the --with-, though.
--enable-native-comp{,ilation,iler} might be more consistent with
other configures. (and --with-libgccjit would go with it)

> Thinking about if we don't need to use shortcuts also
> '--with-native-compiler' might be okay WDYT?
>
> Lets just pick the one we like and I'll make the change.

I still think it would be good to split out the ability to run
natively-compiled files from the ability to generate them. We should
plan for configure options for that.