* helm-dabbrev.el: Implement cycling in first candidates before helm completion.
* helm-dabbrev.el (helm-dabbrev-cycle-thresold): New user var, disable cycling when 0 or null.
* helm-dabbrev.el: Remove hardcoded value for helm-dabbrev-cycle-thresold.
* helm-dabbrev.el (helm-dabbrev-cycle-thresold): Fix docstring.
* helm-buffers.el (helm-buffer-max-length): Issue #267.
* helm-dabbrev.el (helm-dabbrev-cycle-thresold): Fix defcustom.
* helm-dabbrev.el: Change prefixes in internal vars.
* helm.el (with-helm-current-buffer): Use current-buffer when helm-current-buffer is not already set.
Merge branch 'exp'