MAHOUT-958: fix use with globs, MAHOUT-944: minor tweak to driver.classes

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1490793 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-944: fix test

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1490794 13f79535-47bb-0310-9956-ffa450edef68