MAHOUT-833: Make conversion to sequence files map-reduce - (changes based on feedback from review).

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1496927 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-833: Make conversion to sequence files map-reduce (changes based on feedback from code review)

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1496929 13f79535-47bb-0310-9956-ffa450edef68