kern/166780: [sysctl] [request] add sysctl for swap space used

[linimon at FreeBSD.org]

Old Synopsis: add sysctl for swap space used
New Synopsis: [sysctl] [request] add sysctl for swap space used

State-Changed-From-To: open->suspended
State-Changed-By: linimon
State-Changed-When: Thu Apr 26 02:45:13 UTC 2012
State-Changed-Why: 
awaiting someone to make a patch.

http://www.freebsd.org/cgi/query-pr.cgi?pr=166780