bug#47028: Discourage single-character package names

[Ludovic Courtès]

Hi Mark & Tobias,

Mark H Weaver <m...@netris.org> skribis:

> I fully support your proposal to talk about single-character names in
> the manual, and also to check for them in the linter, but perhaps "r"
> should be whitelisted.

Seconded on both points!  The patches look great to me.

Thanks,
Ludo’.