Delegating initial stab

Conflicts:
	mapr31/src/org/pentaho/hadoop/shim/mapr31/HadoopShim.java
	mapr31/src/org/pentaho/hadoop/shim/mapr31/authentication/MapRSuperUserKerberosConsumer.java
	mapr31/src/org/pentaho/hadoop/shim/mapr31/authentication/MapRSuperUserNoAuthConsumer.java
spoofing implemented for hdfs, initial for mapreduce