Add couchbaselabs/query. Get indexing from ceejatec.

Change-Id: I5bc06e8de6b76ea866cec9915207b45261c6bf13
Reviewed-on: http://review.couchbase.org/42249
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>