HIVE-7022: Replace BinaryWritable with BytesWritable in Parquet serde (reviewed by Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1602245 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7158: Use Tez auto-parallelism in Hive (Gunther Hagleitner, reviewed by Lefty, Vikram, Sid and Gopal)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1602327 13f79535-47bb-0310-9956-ffa450edef68