kern/174902: [jail] jail should provide validator for jail names

[linimon at FreeBSD.org]

Old Synopsis: jail should provide validator for jail names
New Synopsis: [jail] jail should provide validator for jail names

Responsible-Changed-From-To: freebsd-bugs->freebsd-jail
Responsible-Changed-By: linimon
Responsible-Changed-When: Mon Jan 7 04:01:38 UTC 2013
Responsible-Changed-Why: 
reclassify.

http://www.freebsd.org/cgi/query-pr.cgi?pr=174902