Fix some dissectors doing termio (fprintf(stderr,..), g_warning()).

- Use report_...failure() (in most cases).
- Also: Do some misc fixes in certain disectors
  - re-arrange order of #includes
  - Fixup preferences help text

Change-Id: I385f6f97257f365f53ce611df02f57f9257dc5f9
Reviewed-on: https://code.wireshark.org/review/6039
Petri-Dish: Bill Meier <wmeier@newsguy.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>