MAHOUT-1240 Randomized testing and Serialization of NonZeros (choosing correctness over performance)

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1489456 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1240 Change VectorWritableTest to use random generator from the super class

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1489462 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1240: Randomized testing and Serialization of NonZeros - Adding maven dependency for carrotsearch.randomizedtesting

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1489660 13f79535-47bb-0310-9956-ffa450edef68
More inspection cleanup

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1489707 13f79535-47bb-0310-9956-ffa450edef68