bug#20325: convert "fixes:debbugs:123" in log to (Bug#123) in ChangeLog

[Eli Zaretskii]

> From: Ivan Shmakov <ivan@siamics.net>
> Date: Sat, 18 Apr 2015 09:25:30 +0000
> 
> >>>>> Eli Zaretskii <eliz@gnu.org> writes:
> >>>>> From: Paul Eggert <eggert@cs.ucla.edu>
> 
>  >> "Fixes: debbugs:NNNN" is designed for Bzr I think,
> 
>  > Bzr didn't have this in the log messages, it had this as meta-data.
>  > Conversion to Git moved this into the commit log, since AFAIK Git
>  > doesn't have such an attribute in its meta-data.
> 
>       I guess the above means there’s no valid reason to stick to this
>       format any longer?

Probably not.

>       FWIW, I’d prefer to just stick with the (bug#) markers for
>       commit messages, and let them propagate as is to the ChangeLog
>       when one’s generated.

Agreed, as that scales better to all the possible ways of making a
commit (some use VC, some use magit, some use command line plus
emacsclient, etc.).