KIJIMR-7. Makes JobHistoryKijiTable more portable between Hadoop versions.

Signed-off-by: Daisy Zhou <daisy@wibidata.com>
KIJIMR-57. MapReduceJobBuilder adds correct jars to distributed cache.

This commit modified MapReduceJobBuilder so that it adds the lib jars of both
kiji-mapreduce and kiji-schema to the distributed cache / classpath of MapReduce
jobs run using kiji-mapreduce tools.

Signed-off-by: Robert Chu <robert@wibidata.com>