ports/160158: Update ports deskutils/calibre to 0.8.15

[edwin at FreeBSD.org]

Synopsis: Update ports deskutils/calibre to 0.8.15

Class-Changed-From-To: maintainer-update->change-request
Class-Changed-By: edwin
Class-Changed-When: Wed Aug 24 20:50:19 UTC 2011
Class-Changed-Why: 
Fix category (submitter is not maintainer) (via the GNATS Auto Assign
Tool)

http://www.freebsd.org/cgi/query-pr.cgi?pr=160158