MAHOUT-1615: SparkEngine drmFromHDFS returning the same Key for all Key,Vec Pairs for Text-Keyed SequenceFiles. this closes apache/mahout #52
Revert "MAHOUT-1615: SparkEngine drmFromHDFS returning the same Key for all Key,Vec Pairs for Text-Keyed SequenceFiles. this closes apache/mahout #52"

This reverts commit 034afd61126660b6f44b232fdf3e1dd9d1a79708.
MAHOUT-1615: SparkEngine drmFromHDFS returning the same Key for all Key,Vec Pairs for Text-Keyed SequenceFiles.  This closes apache/mahout#52
MAHOUT-1615: fix up HDFS ClassTag reading from H2O bindings. this closes apache/mahout#58
MAHOUT-1615: remove temporary hard coded settings from spark-shell
NOJIRA refactor IndexedDataset and CLI drivers into core and engine specific parts, closes apache/mahout#59
fixed bug, now reporting correct app name to Spark
moved Mahout to Spark 1.1.0
Merge remote-tracking branch 'apache/master' into hadoop-client
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/mahout into hadoop-client
Set hadoop 2.2.0 as default, added cdh and mapr repositories to the pom, and commented out hadoop-related profiles in mahout-spark module.