ports/165510: Update textproc/sigil to 0.5.3

[cs at FreeBSD.org]

Synopsis: Update textproc/sigil to 0.5.3

Responsible-Changed-From-To: freebsd-ports-bugs->cs
Responsible-Changed-By: cs
Responsible-Changed-When: Wed Feb 29 20:40:04 UTC 2012
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=165510