MAHOUT-1464 'Fat' nongraph physical A'A.
Refactored decompositions package out of drm package.
Added some kryo and akka related properties to the test setup.

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1579565 13f79535-47bb-0310-9956-ffa450edef68