Fixed project to work with Hive 0.12.0 (CDH5-beta-2).

Note: This breaks support for earlier versions of Hive.

As discussed on https://github.com/rcongiu/Hive-JSON-Serde/issues/63, here is the promised pull request that makes things work with Hive 0.12.0, but breaks it for earlier versions of Hive. I verified that this code does not compile against either 0.11.0-cdh5.0.0-beta-1 or 0.8.1-cdh4.0.1. Hopefully the Maven profile configuration you mentioned is not too much work to set up.