LUCENE-4839: Fix bug in SorterTemplate.timSort().


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1457315 13f79535-47bb-0310-9956-ffa450edef68
Add alg to compare performance of porter and porter2 stemmers

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1457317 13f79535-47bb-0310-9956-ffa450edef68