HIVE-5006: Re-factor HiveServer2 JDBC PreparedStatement to avoid duplicate code (Prasad Mujumdar via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1512506 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd