Final 2.2.0 Release Candidate

Change-Id: Id09233157d06f812c73f9ed35277557c720989a4
Reviewed-on: http://review.couchbase.org/28879
Reviewed-by: Wayne Siu <waynesiu88@gmail.com>
Tested-by: Philip Labee <philip@couchbase.com>
Reviewed-by: Philip Labee <philip@couchbase.com>