kern/188328: [zfs] UPDATING should provide caveats for running `zpool upgrade`

[linimon at FreeBSD.org]

Old Synopsis: UPDATING should provide caveats for running `zpool upgrade`
New Synopsis: [zfs] UPDATING should provide caveats for running `zpool upgrade`

Responsible-Changed-From-To: freebsd-bugs->freebsd-fs
Responsible-Changed-By: linimon
Responsible-Changed-When: Wed Apr 16 01:34:11 UTC 2014
Responsible-Changed-Why: 
Over to maintainer(s).

http://www.freebsd.org/cgi/query-pr.cgi?pr=188328