* helm-grep.el (helm-grep-filter-one-by-one): Use the root fn if available (ls-git).
* helm-grep.el (helm-grep-prepare-candidates): Fix directory candidates with ack.
* helm-sys.el: Fix top command for Mac Osx (#436)
* helm-files.el (helm-find-files-do-action): Bind helm-ff-auto-update-initial-value (#441)
* helm-mode.el (helm-read-file-name): Fix usage of helm-ff-auto-update-flag.