MFC: r255977 (partial)

Sweep man pages replacing ad -> ada.
MFC: r265454

- Allow foot shooting with the resetconfig command via the -f option.
- Fix typos preventing -f to actually work with the create command.
- Initialize flags to zero rather than using stack garbage when handling
  the grow command.

Sponsored by:	Bally Wulff Games & Entertainment GmbH
MFC: r265362

Mention the axge(4) driver in the hardware notes.