CBL-13:  more info when exiting

Change-Id: I76b79232852c87ebcc8fc4af6c4d95f4af1d9f5f
Reviewed-on: http://review.couchbase.org/37755
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>