bug#67005: 30.0.50; improve nadivce/comp/trampoline handling

[Eli Zaretskii]

> Cc: Jens Schmidt <jschmidt4gnu@vodafonemail.de>, 67005@debbugs.gnu.org
> Date: Wed, 22 Nov 2023 11:07:38 -0500
> From:  Stefan Monnier via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> >>> Only slightly off-topic: When changing the default value of user option
> >>> `native-comp-never-optimize-functions', which now both Andrea and I have
> [...]
> > Good to know I updated it since I changed the vaule first. Thanks Jens
> > for noticing that.
> 
> BTW, why is it a `defcustom` rather than a `defvar`?
> Do we really expect "normal users" to change it?

Yes, we do.  I think they actually did already, maybe Andrea remembers
which functions and why.