Add the Jaro-Winkler string distance algorithm to StringUtils

Add SimilarityMatch algorithm to evaluate a similarity matching ratio between two strings.

double matchscore = StringUtils.calculateSimilarityMatching(String s1, String s2)

I have a patch ready with implementation of similaritymatch.
This happens to be a usual need in science algorithm and directly using commons lang3 library for these string operation would be neat.