add compression codec trait and snappy compression
fix dependencies
Enhance job ui in spark ui system with adding pool information
Building spark assembly for further consumption of the Spark project with a deployed cluster
Add a public method getCachedRdds to SparkContext
Fixing for LocalScheduler with test, that much works ..
removing non-pertinent comment
Add toMap method to TimeStampedHashMap and use it
Rename method per rxin feedback
Move getPersistentRDDs testing to a new Suite
Re-working in terms of changes to TaskSetManager. Verified with Standalone and Local mode.
Merge pull request #720 from ooyala/2013-07/persistent-rdds-api

Add a public method getCachedRdds to SparkContext
style
Tracks task start events and shows number of active tasks on Executor UI
Merge pull request #723 from rxin/mllib

Made RegressionModel serializable and added unit tests to make sure predict methods would work.
Merge branch 'master' into SPARK-826

Conflicts:
	core/src/main/scala/spark/scheduler/local/LocalScheduler.scala
Adds/removes active tasks only once
Leaking spark context in the test
SPARK-829: scheduler shouldn't hang if a task contains unserializable objects in its closure.
Replaces Seq with HashSet, removes redundant import