r/m couchbase 1.8
r/m hypertable
r/m elasticsearch
r/m gemfire
r/m mapkeeper
r/m infinispan
r/m membase
r/m OrientDB
r/m nosqldb
r/m redis
r/m voldemort
refactor to avoid Vector in DB signature
Part 3: fixes #2 - merge master into preparedstmt