Upgrade Kafka 0.7.2 to Kafka 0.8.0-beta1 for Spark Streaming
Fix the Worker to use CoarseGrainedExecutorBackend and modify classpath to be explicit
about inclusion of spark.jar and app.jar
Merge pull request #56 from jerryshao/kafka-0.8-dev

Upgrade Kafka 0.7.2 to Kafka 0.8.0-beta1 for Spark Streaming

Conflicts:
	streaming/pom.xml
Merge pull request #92 from tgravescs/sparkYarnFixClasspath

Fix the Worker to use CoarseGrainedExecutorBackend and modify classpath ...

...to be explicit about inclusion of spark.jar and app.jar.  Be explicit so if there are any conflicts in packaging between spark.jar and app.jar we don't get random results due to the classpath having /*, which can including things in different order.