HIVE-3682 : when output hive table to file,users should could have a separator of their own choice (Sushanth Sowmyan via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.11@1477372 13f79535-47bb-0310-9956-ffa450edef68