Updates to add stream response api based on memcached changes

Change-Id: I46d0022f8cdd86be3399c646afadcba629ef6b56
Reviewed-on: http://review.couchbase.org/30273
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>
Tested-by: Michael Wiederhold <mike@couchbase.com>