bug#62762: 'make' often errors with "Org version mismatch" after pulling a new version of the code

[Eli Zaretskii]

> From: Ihor Radchenko <yantar92@posteo.net>
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>, bzg@gnu.org,
>  dmitry@gutov.dev, 62762@debbugs.gnu.org
> Date: Sat, 22 Apr 2023 12:39:42 +0000
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > So I think org--built-in-p should be a defvar, not defconst.  Or maybe
> > you can teach me how to override a defconst?  Stefan, any ideas?
> 
> Well. I think I missed that `defconst', unlike `defvar', overrides the
> existing variable value. Switching to `defvar' is ok. (Or, it might be
> something like (eval-after-load 'org-macs ...), but I see no reason to
> prefer it over switching to defvar).
> 
> I think it will be best to install the change in Emacs and then back-port
> it to Org. Will it be ok?

Sure, fine.

Thanks.