Since Hive Concurrency issues in Object Inspector have been fixed, revert the synchronization in Shark. Still need to leave a class level lock in XMLDecoder as its not threadsafe
Removed de.javakaffee.kryoserializers.ArraysAsListSerializer reference
because Spark's chill-java library will take care of that.
Merge pull request #109 from amplab/kryo

Kryo update.
Merge pull request #107 from harsha2010/concurrency

Revert synchronization for Object Inspectors since its fixed in Hive branch
Merge branch 'master' of github.com:amplab/shark into api
More APIs update.

- runSql now also runs DDL commands.
- moved DataType into a top level class in api package.