- added the secondstring libraries that contains all sorts of useful string distance functions
- added a java arithmetic coding library (used to implement a string distance based on PPM arithmetic coding)
- added the vicino kNN string clustering library (from MIT's SIMILE)
git-svn-id: http://google-refine.googlecode.com/svn/trunk@181 7d457c2a-affb-35e4-300a-418c747d4874