docs/157792: [PATCH] Porter's Handbook clarification on date strings as PORTVERSIONs

[bcr at FreeBSD.org]

Synopsis: [PATCH] Porter's Handbook clarification on date strings as PORTVERSIONs

Responsible-Changed-From-To: freebsd-doc->bcr
Responsible-Changed-By: bcr
Responsible-Changed-When: Tue Jun 14 09:15:18 UTC 2011
Responsible-Changed-Why: 
I will work on this PR.

http://www.freebsd.org/cgi/query-pr.cgi?pr=157792