PIG-3308: Storing data in hive columnar rc format

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1478879 13f79535-47bb-0310-9956-ffa450edef68
PIG-3309: TestJsonLoaderStorage fails with IBM JDK 6/7

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1478917 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk