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
MAHOUT-961: fix issues with visualizing DF trees

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1489802 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-916 reduce max JVM heap during parallel tests to avoid thrashing from over-committed memory

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1489827 13f79535-47bb-0310-9956-ffa450edef68