* allout.el (allout-keybindings-list): Use vectors instead of strings for keys.

* allout.el (allout-keybindings-list): Use vectors instead of strings for keys.
(allout-line-boundary-regexp):
(set-allout-regexp):
(allout-prefix-data): Repair handling of formfeeds as header prefix.
(allout-write-file-hook-handler): Repair mangling of error handling.
(allout-region-active-p): Fallback to mark-active.