Change the rules for fuzzyvsmatch-plugin.
* helm.el:
(helm-fuzzy-match,
helm-fuzzy-search,
helm-search-part): From now when pattern contain spaces
delegate the job to match-plugin (so each part is regexp matched and
not fuzzy matched).

* helm-match-plugin.el: Add comment.
* helm-source.el: Allow appending lambda's.
* helm.el (helm-fuzzy-matching-default-sort-fn): Fix (display . real) candidates (#145).
* helm.el (helm-fuzzy-matching-default-sort-fn): Add comment.
* helm-locate.el (helm-locate-1): Fix setting of helm-locate-command.
* helm.el (helm-compute-matches): Setup fuzzy pattern cache here (#145).
* helm-files.el (helm-source-recentf): Enable fuzzy-matching (#145).