HIVE-6243: error in high-precision division for Decimal128 (Eric Hanson)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1561760 13f79535-47bb-0310-9956-ffa450edef68
sql std access control
fixing tests, adding show grant, apache headers
cosmetic cleanup of patch
addressing review comments
addressing review comments -  update test results
create conf copy before Hive.get(conf)
addressing review comments from brock