Expose for partition values
Use existing get() / positionOf() api but include partitions in the data.
Don't use Guava @Beta api
Merge pull request #1 from facebook/partition-values

Expose for partition values
Merge branch 'master' into perf

Conflicts:
	src/main/java/com/facebook/giraph/hive/common/HiveUtils.java
	src/main/java/com/facebook/giraph/hive/input/HiveApiInputFormat.java
	src/main/java/com/facebook/giraph/hive/input/HiveApiRecordReader.java
	src/main/java/com/facebook/giraph/hive/record/DefaultRecord.java
	src/main/java/com/facebook/giraph/hive/schema/HiveApiTableSchema.java
	src/main/java/com/facebook/giraph/hive/schema/HiveTableSchema.java
	src/main/java/com/facebook/giraph/hive/schema/HiveTableSchemas.java