ports/170384: [ports] UPDATING: Correct 20120804 entry and add portupgrade instructions

[bdrewery at FreeBSD.org]

Synopsis: [ports] UPDATING: Correct 20120804 entry and add portupgrade instructions

Responsible-Changed-From-To: freebsd-ports-bugs->bdrewery
Responsible-Changed-By: bdrewery
Responsible-Changed-When: Tue Aug 7 03:42:09 UTC 2012
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=170384