HIVE-6399: bug in high-precision Decimal128 multiply (Eric Hanson, reviewed by Jitendra Pandey)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1569111 13f79535-47bb-0310-9956-ffa450edef68
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@1569164 13f79535-47bb-0310-9956-ffa450edef68