Merge branch 'master' of https://github.com/mesos/spark into WithThing

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

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

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

core/src/main/scala/spark/scheduler/DAGScheduler.scala

core/src/main/scala/spark/storage/BlockManager.scala

core/src/main/scala/spark/storage/BlockManagerMaster.scala

core/src/main/scala/spark/storage/ThreadingTest.scala

core/src/test/scala/spark/KryoSerializerSuite.scala

core/src/test/scala/spark/MapOutputTrackerSuite.scala

core/src/test/scala/spark/scheduler/DAGSchedulerSuite.scala

core/src/test/scala/spark/storage/BlockManagerSuite.scala

pom.xml

project/SparkBuild.scala