HIVE-6104: Join-key logging in join operator (Steven Wong via Vikram Dixit)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1563006 13f79535-47bb-0310-9956-ffa450edef68
adding new privileges, cleanup, tests
fixing static code init issues, unit tests
new test files, other files
minor cleanup
update .q.out
fixing case before comparing