add compression codec trait and snappy compression
fix dependencies
Enhance job ui in spark ui system with adding pool information
Fixing for LocalScheduler with test, that much works ..
removing non-pertinent comment
Re-working in terms of changes to TaskSetManager. Verified with Standalone and Local mode.
style
Merge branch 'master' into SPARK-826

Conflicts:
	core/src/main/scala/spark/scheduler/local/LocalScheduler.scala
Leaking spark context in the test
mixing in SharedSparkContext for the kryo-collect test
Maximum task failures configurable
style
reverting changes to SparkBuild.scala
changes per comments.
typo
Use Bootstrap progress bars in web UI
Merge branch 'master' of https://github.com/mesos/spark into bootstrap-update

cially if it merges an updated upstream into a topic branch.
Added started tasks to progress bar
Merge branch 'master' of https://github.com/mesos/spark into bootstrap-update

Conflicts:
	core/src/main/scala/spark/ui/jobs/IndexPage.scala
Fixed continuity of executorToTasksActive, changed color of progress bars