dependencies

Conflicts:
	Makefile
	core/src/main/java/spark/compress/lzf/LZF.java
	core/src/main/java/spark/compress/lzf/LZFInputStream.java
	core/src/main/java/spark/compress/lzf/LZFOutputStream.java
	core/src/main/native/spark_compress_lzf_LZF.c
	run

 - Updated to use ning libraries.
 - Passes all unit tests

Conflicts:
	src/scala/spark/Broadcast.scala

 - Configuration parameters are renamed to follow our convention
 - Master now automatically supplies its hostAddress instead of reading from config file
 - sendBroadcast has been removed from the Broadcast trait

Someone forgot to pass the parameters: fixes SPARK_MEM set from main script but not passed to executor.

- Changed DfsShuffle to default in RDD.scala.

Replacing the native lzf compression code with the ning open-source compress-lzf library. (Apache 2.0 liscense)

Conflicts:
	conf/java-opts
	src/scala/spark/Broadcast.scala
	src/scala/spark/DfsBroadcast.scala
	src/scala/spark/SparkContext.scala

- Removed unused code related to dualMode (deprecated).

Conflicts:
	Makefile
	run
	src/scala/spark/Broadcast.scala
	src/scala/spark/Executor.scala
	src/scala/spark/HdfsFile.scala
	src/scala/spark/MesosScheduler.scala
	src/scala/spark/RDD.scala
	src/scala/spark/SparkContext.scala
	src/scala/spark/Split.scala
	src/scala/spark/Utils.scala
	src/scala/spark/repl/SparkInterpreter.scala
	third_party/mesos.jar

- Removed unused code.

Conflicts:
	Makefile
	run
	src/scala/spark/Broadcast.scala
	src/scala/spark/Executor.scala
	src/scala/spark/HdfsFile.scala
	src/scala/spark/MesosScheduler.scala
	src/scala/spark/RDD.scala
	src/scala/spark/SparkContext.scala
	src/scala/spark/Split.scala
	src/scala/spark/Utils.scala
	src/scala/spark/repl/SparkInterpreter.scala
	third_party/mesos.jar

- Reflection-based broadcast class loading is still not working.

- Removed ununsed speed-related stuff
- Moved (H)DfsBroadcast to its own file