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
Adding SVM and Lasso, moving LogisticRegression to classification from regression

Also, add regularization parameter to SGD
Shows totals for shuffle data and CPU time in Stage, homepage overviews including active time
Split Shuffle Activity overview column for read/write
Displys shuffle read/write only if exists, wraps if statements, trims old vals, grabs current time once
Fix Bug in Partition Pruning, index of Pruned Partitions should inherit from parent
Indentation
Indentation
Code review
Added missing scalatest dependency
Merge pull request #738 from harsha2010/pruning

Fix bug in Partition Pruning.
Merge pull request #739 from markhamstra/toolsPom

Missing tools/pom.xml scalatest dependency