bug#41821: 28.0.50; read-directory-name in vc commands should provide defaults from projects

[Eli Zaretskii]

> From: "Basil L. Contovounesios" <contovob@tcd.ie>
> Cc: Juri Linkov <juri@linkov.net>,  41821@debbugs.gnu.org,  dgutov@yandex.ru
> Date: Wed, 24 Jun 2020 15:52:20 +0100
> 
> >   In end of data:
> >   vc/vc-hooks.el:1013:1: Warning: the function `project-known-roots' is not
> >       known to be defined.
> 
> Since project-known-roots is autoloaded, will this go away when
> ldefs-boot.el is updated?

You mean loaddefs.el, I presume (ldefs-boot is rarely used during the
build).

Probably, but that's not my main problem with that change.