Don't require spark home to be set for standalone mode
Merge pull request #883 from alig/master

Don't require the spark home environment variable to be set for standalone mode (change needed by SIMR)
Initial work to rename package to org.apache.spark
Small tweak to docs gradient
Update docs for new package
Remove shutdown hook to stop jetty; this is unnecessary for releasing
ports and creates noisy log messages
Add banner to PySpark and make wordcount output nicer
Fix more URLs in docs
Fix over-zealous find-and-replace in HTML
Fix some URLs
More fixes
Move some classes to more appropriate packages:

* RDD, *RDDFunctions -> org.apache.spark.rdd
* Utils, ClosureCleaner, SizeEstimator -> org.apache.spark.util
* JavaSerializer, KryoSerializer -> org.apache.spark.serializer
Merge pull request #882 from mateiz/package-rename

Rename spark package to org.apache.spark
Run script fixes for Windows after package & assembly change
Merge pull request #884 from mateiz/win-fixes

Run script fixes for Windows after package & assembly change
Allow PySpark to launch worker.py directly on Windows
Further fixes to get PySpark to work on Windows
Doc improvements
Merge pull request #885 from mateiz/win-py

Allow PySpark to run on Windows
Fix spark.io.compression.codec and change default codec to LZF