* Changes to HiBench for packaging against CDH5 and MR2.
* Attempt at unification of MR1 and MR2.
* Changes made to several scripts and Mahout binary.
* Several files recompiled.
* New compiled packages/jars added.
Delete mahout-distribution-0.7-cdh4, mahout-distribution-0.7-hadoop1, common/autogen/src/org/apache/hadoop/fs/dfsioe/out