bug#39121: 27.0.60; occur: Add bindings for next-error-no-select

[Eli Zaretskii]

> From: Mattias Engdegård <mattiase@acm.org>
> Date: Sun, 25 Jul 2021 12:55:47 +0200
> Cc: Lars Ingebrigtsen <larsi@gnus.org>, juri@linkov.net, 
> 39121@debbugs.gnu.org,
>         tino.calancha@gmail.com
> 
> 25 juli 2021 kl. 11.16 skrev Eli Zaretskii <eliz@gnu.org>:
> 
> > Should we say something about these changes in NEWS?
> 
> That's a good question. No incompatible changes were made, nor were any new 
> facilities introduced that a user needs to know about. Did you have anything 
> particular in mind?

That the occur-target text property's value can now be something new,
and that this new value form is actually the preferred one?