Replaced String.split() with CSVUtils.parseline()

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1552927 13f79535-47bb-0310-9956-ffa450edef68
Code cleanup, removed continue statements in loops

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1552933 13f79535-47bb-0310-9956-ffa450edef68