MAHOUT-1511 - Renaming core to mrlegacy.

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1588649 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1425 SGD classifier example with bank marketing dataset.

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1588652 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1425 small style fixes

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1588655 13f79535-47bb-0310-9956-ffa450edef68
MAHOUT-1517 Remove casts to int in ALSWRFactorizer

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1588656 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk