[Development] abandoning stale changes on gerrit

[Shaw Andy]

> 5.0 is out and the 5.1 feature freeze isn't that far off any more.
> seems like the best time for some serious house cleaning.
> therefore i'd like to urge everyone to give their pending changes which
> haven't seen activity for a long time a honest look.
> please explicitly mark the ones you still want to work on by adding a
> comment. everything which has no indication of (planned) activity in a
> few weeks will be abandoned by administrative action.
> if you are an ex-troll/-nokian, please also check the dashboard of your
> alter ego.
> if you are a maintainer, give identified drive-by contributors a ping.
> i'd also like to encourage everyone to adopt orphaned changes they have
> an interest in.

Wouldn't it be best to put a specific date on when the administrative action will take place?  Rather than leaving it arbitrary, so people have time to look at this.

Andy