HIVE-6707 : Lazy maps are broken (LazyMap and LazyBinaryMap) (Prasanth J via Vikram Dixit, reviewed by Gunther)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.13@1580797 13f79535-47bb-0310-9956-ffa450edef68