Bug#808903: "a stop job is running" messages should mention what package is involved

[積丹尼 Dan Jacobson]

Package: systemd
Version: 228-2+b1
Severity: wishlist

Rather than at poweroff just saying "a stop job is running for session
c1 of user jidanni", you should also say what is the culprit behind all
of this.

I.e., the message should also mention which package is involved.

The user is helpless to find out what is the culprit and can only just
sit there and stare in wonder.

Or he needs to go through all the trouble to power back on his machine
just to find the seven or so characters that compose the package to
blame's name.