Merge branch 'master' into volatile

bagel/pom.xml

bagel/src/main/scala/spark/bagel/Bagel.scala

bagel/src/test/scala/bagel/BagelSuite.scala

core/pom.xml

core/src/main/scala/spark/BlockStoreShuffleFetcher.scala

core/src/main/scala/spark/KryoSerializer.scala

core/src/main/scala/spark/MapOutputTracker.scala

core/src/main/scala/spark/PairRDDFunctions.scala

core/src/main/scala/spark/Partitioner.scala

core/src/main/scala/spark/RDD.scala

core/src/main/scala/spark/ShuffleFetcher.scala

core/src/main/scala/spark/SparkContext.scala

core/src/main/scala/spark/SparkEnv.scala

core/src/main/scala/spark/TaskContext.scala

core/src/main/scala/spark/api/java/JavaPairRDD.scala

core/src/main/scala/spark/api/java/JavaSparkContext.scala

core/src/main/scala/spark/api/python/PythonRDD.scala

core/src/main/scala/spark/deploy/DeployMessage.scala

core/src/main/scala/spark/deploy/client/Client.scala

core/src/main/scala/spark/deploy/master/Master.scala