HIVE-1879 : Remove hive.metastore.metadb.dir property from hive-default.xml and HiveConf (Lars Francke via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1623638 13f79535-47bb-0310-9956-ffa450edef68