- Export all FIDOCTRL (other FTN kludge lines) to the QWK HEADERS.DAT file.
  These should already be imported if they exist, but were never added during
  export, so untested/new behavior. The control paragraph (kludge line) of
  specific interest here is the "CHRS" (charset) kludge we need for UTF-8.

- Don't use the QWK "newline" character (0xE3) when the message is UTF-8.
  Use bare-LF's instead. This is pretty untested at this point as I will need
  another QWKnet board to post or receive UTF-8 encoded messages to test,
  getting the code into CVS is the first step. At least for now, there's no
  opt-in/out for this behavior. If your BBS has UTF-8 encoded messages, some
  QWK nodes or offline readers may have trouble with packets which include
  those messages. Or they may work fine (but likely display garbage CP437
  chars in-place of the proper Unicode codepoint glyph).

- The beginning of UTF-8 input support in getstr() - which needs more work,
  particularly around character and word deletion and insertion.
- The internal message editor now supports UTF-8 messages and kind of somewhat
  supports inputting UTF-8 characters in message text.

New put/print text flag: P_AUTO_UTF8 which can auto-detect UTF8 strings and
do the "right thing" for the user's terminal. New associated sbbs_t method:
auto_utf8() which automatically sets P_UTF8 for any stirng that begins with
a UTF-8 BOM (ZWNBSP). Else, if the P_AUTO_UTF8 mode flag is set, then
it checks to see if the string contains invalid US-ASCII chars but valid UTF-8
sequences and then sets P_UTF8 accordingly. Used by putmsg() and bputs().

There's a new permuation of bprintf() which accepts a mode argument
(i.e. for P_UTF8) and passes it on to the new mode-capable bputs().