Change version to 0.6.2-SNAPSHOT
Tests for MapOutputTracker.
Fix NullPointerException when unregistering a map output twice.
Fix NullPointerException caused by unregistered map outputs.
Use hostname instead of IP in deploy scripts to let Akka connect properly
Adding multi-jar constructor in quickstart
Use external addresses in standalone WebUI on EC2.
Search for a non-loopback address in Utils.getLocalIpAddress
Make sure the SSH key we copy to EC2 has permissions 600.

SPARK-539 #resolve
SPARK-626: Remove rules before removing security groups, with a pause in
between so wait for AWS eventual consistency to catch up.
Conflicts:

	ec2/spark_ec2.py
Import EC2 script updates from master branch
Use spark-env.sh to configure standalone master.  See SPARK-638.

Also fixed a typo in the standalone mode documentation.
Fix an issue in ConnectionManager where sendingMessage may create too many unnecessary SendingConnections.
Modified Patch according to comments
Make filter preserve partitioner info, since it can

Conflicts:
	core/src/main/scala/spark/rdd/FilteredRDD.scala
Import small optimization to CoGroupedRDD from master (by Reynold Xin)
Add try-finally to handle MapOutputTracker timeouts.
Conflicts:
	core/src/main/scala/spark/MapOutputTracker.scala
Changed teh scala version to 2.9.2, so that the classes can be found when the classpath is expanded.
Throw FetchFailedException for cached missing locs
Additional tests for MapOutputTracker.