MAHOUT-833: Make conversion to sequence files map-reduce - Checking in, tests pass

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1495863 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-944:lucene2seq - removed unused import

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1495924 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-833: Make conversion to sequence files map-reduce - first round of Code cleanup based on feedback from code review

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1495927 13f79535-47bb-0310-9956-ffa450edef68