bug#43269: 28.0.50; [feature/native-comp] provide a user feedback on Emacs being native compiled

[Eli Zaretskii]

> From: Andrea Corallo <akrl@sdf.org>
> Cc: rms@gnu.org,  arthur.miller@live.com,  43269@debbugs.gnu.org
> Date: Wed, 09 Sep 2020 15:19:58 +0000
> 
> the native compiler improved considerably the compilation speed with
> time.  I just took a measure at today's status native compiling only the
> dumped image (what is going to be default when native compiling).
> 
> On my dev machine vanilla Emacs uses 12m tot CPU time for a compilation
> from a fresh repo. The same native compiling takes 30m tot CPU time so
> IMO it is not terrible.

Is this with "make" or with "make -jN"? if the latter, what value of N
was used?

> For Guile I have no idea if it was simpler to implement or discuss.

I'm talking from the POV of a Guile user: it is simply seamless.