Fixed crashing 2i queries in mixed clusters

* In a mixed 1.4.2 - 1.4.4+ cluster, terms are not passed back to a
  query originating in a 1.4.2 node.
* In a mixed 1.3.2 - 1.4.X cluster, terms are passed back to the 1.3.2
 if the query originated there.
Merge pull request #767 from basho/bugfix/mixed-cluster-2i

Fixed 2i queries in mixed clusters