ports/133947: update liboil to 0.13.6

[amdmi3 at FreeBSD.org]

Synopsis: update liboil to 0.13.6

Responsible-Changed-From-To: freebsd-ports-bugs->amdmi3
Responsible-Changed-By: amdmi3
Responsible-Changed-When: Thu Apr 23 14:49:48 UTC 2009
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=133947