* helm-files.el (helm-files-save-file-name-history): Use one new optional arg.
(helm-ff-save-history): Fix docstring.
* helm.el : Fix some debugging issue with condition-case.
(helm-compute-matches,
helm-get-candidates,
helm-log-eval): Do it.
* helm-elisp.el (helm-c-apropos-init): Issue #186 require helm-help.