#558 glabel is very chatty

[Volker]

Syslog is floaded with messages like this:

May 7 20:21:59 kernel: GEOM_LABEL: Label ufsid/4a033b0f8b782d4f removed.
May 7 20:22:00 kernel: GEOM_LABEL: Label for provider ad0a is ufsid/4a033b0f8b782d4f.

See also:
http://www.mail-archive.com/freebsd-stable@freebsd.org/msg102954.html

Solution:
http://people.freebsd.org/~ivoras/diffs/geom_label_errlevel.txt