Merge branch 'apache-master' into transform

.../main/scala/org/apache/spark/api/java/JavaDoubleRDD.scala

...rc/main/scala/org/apache/spark/api/java/JavaPairRDD.scala

core/src/main/scala/org/apache/spark/api/java/JavaRDD.scala

.../main/scala/org/apache/spark/scheduler/DAGScheduler.scala

.../scala/org/apache/spark/scheduler/DAGSchedulerEvent.scala

...main/scala/org/apache/spark/scheduler/SparkListener.scala

...n/scala/org/apache/spark/scheduler/SparkListenerBus.scala

.../src/main/scala/org/apache/spark/scheduler/TaskInfo.scala

...org/apache/spark/scheduler/cluster/ClusterScheduler.scala

...pache/spark/scheduler/cluster/ClusterTaskSetManager.scala

...org/apache/spark/scheduler/cluster/TaskResultGetter.scala

.../scala/org/apache/spark/ui/jobs/JobProgressListener.scala

...scala/org/apache/spark/scheduler/SparkListenerSuite.scala

...a/org/apache/spark/streaming/examples/MQTTWordCount.scala

pom.xml

project/SparkBuild.scala

streaming/pom.xml

...n/scala/org/apache/spark/streaming/StreamingContext.scala

...org/apache/spark/streaming/dstream/MQTTInputDStream.scala