HIVE-6037 - Synchronize HiveConf with hive-default.xml.template and support show conf (Navis via Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1610279 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7394 : Fix logging of ORC padding percentages during inserts (Gopal V reviewed by Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1610335 13f79535-47bb-0310-9956-ffa450edef68