docs/167033: [patch] Add the contents of the wiki page about Subversion vendor imports to the committer's guide.

[bcr at FreeBSD.org]

Synopsis: [patch] Add the contents of the wiki page about Subversion vendor imports to the committer's guide.

Responsible-Changed-From-To: freebsd-doc->bcr
Responsible-Changed-By: bcr
Responsible-Changed-When: Wed Apr 18 19:03:56 UTC 2012
Responsible-Changed-Why: 
I'll take this one.

http://www.freebsd.org/cgi/query-pr.cgi?pr=167033