ENG-10824: Allow for more flexible cursor type in JDBC to support more Spark-JDBC stuff.
ENG-10824: Allow for more flexible cursor type in JDBC to support more Spark-JDBC stuff.

deerwalk/voltdb,deerwalk/voltdb,VoltDB/voltdb,VoltDB/voltdb,migue/voltdb,simonzhangsm/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,migue/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,paulmartel/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,migue/voltdb,paulmartel/voltdb,paulmartel/voltdb,migue/voltdb,migue/voltdb,deerwalk/voltdb,paulmartel/voltdb,migue/voltdb,simonzhangsm/voltdb,migue/voltdb,deerwalk/voltdb,deerwalk/voltdb,paulmartel/voltdb,deerwalk/voltdb,paulmartel/voltdb,VoltDB/voltdb,migue/voltdb,deerwalk/voltdb,paulmartel/voltdb,paulmartel/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb