CBD-1191:  couchstore is now in cmake/

Change-Id: Id390810e5eb8cbe2ad4915772ba8f033b9ad2588
Reviewed-on: http://review.couchbase.org/33186
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Tested-by: Eric Limare <eric.limare@couchbase.com>