* helm.el: Add new sort fn for fuzzy (#145).
(helm-score-string-for-pattern,
helm-fuzzy-matching-default-sort-fn): New.
Merge branch 'master' into exp
* helm-source.el: Enable new sort fn for fuzzy matching (#145).
* helm.el: Add new user vars for fuzzy (#145).
(helm-default-fuzzy-sort-fn,
helm-default-fuzzy-search-fn,
helm-default-fuzzy-match-fn): new.

* helm-source.el: Use them.