Add RDD.tupleBy.
Add PairRDD.keys() and values() to Java API
Rename RDD.tupleBy to keyBy.
Add Accumulable.setValue for easier use in Java
Merge branch 'master' of github.com:mesos/spark
Remove dependencies on sun jvm classes. Instead use reflection to infer
HotSpot options and total physical memory size
Update Hadoop dependency to 1.0.3 as 0.20 has Sun specific dependencies. Also
fix SequenceFileRDDFunctions to pick the right type conversion across Hadoop
versions
Remove unused BoundedMemoryCache file and associated test case.
Use a dummy string class in Size Estimator tests to make it resistant to jdk
versions
Make default hadoop version 1.0.3 in pom.xml
Update expected size of strings to match our dummy string class
Merge pull request #354 from shivaram/ibm-jdk-fixes

Fixes to build and test spark on IBM JVM
Log preferred hosts
Fixing if/else coding style for preferred hosts logging
Merge branch 'master' into tupleBy

Conflicts:
	core/src/test/scala/spark/RDDSuite.scala
Add JavaRDDLike.keyBy.
Merge pull request #353 from stephenh/tupleBy

Add RDD.tupleBy.
Merge pull request #344 from mbautin/log_preferred_hosts

Log preferred hosts
Merge branch 'master' of https://github.com/mesos/spark