Merge branch 'master' of git://github.com/mesos/spark into sgd-cleanup

assembly/pom.xml

assembly/src/main/assembly/assembly.xml

conf/metrics.properties.template

core/pom.xml

core/src/main/resources/spark/ui/static/webui.css

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

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

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

core/src/main/scala/spark/Utils.scala

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

core/src/main/scala/spark/broadcast/HttpBroadcast.scala

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

.../src/main/scala/spark/deploy/master/ApplicationInfo.scala

...rc/main/scala/spark/deploy/master/ApplicationSource.scala

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

core/src/main/scala/spark/deploy/master/ui/IndexPage.scala

core/src/main/scala/spark/deploy/master/ui/MasterWebUI.scala

core/src/main/scala/spark/io/CompressionCodec.scala

core/src/main/scala/spark/metrics/MetricsSystem.scala

core/src/main/scala/spark/rdd/HadoopRDD.scala