warning: iteration 9 invokes undefined behavior

events.

Automatically detect the character set of QWK-imported messages (that don't already have a FidoNet "CHRS" header) and create/set the FIDOCHARS header field accordingly (UTF-8, ASCII, or CP437). This should resolve the issue I observed of QWK-posted messages on FidoNet with the wrong CHRS header value (i.e. CP437, when the message body in fact contained UTF-8).

Some echolists (e.g. linuxnet.na) use '%' for comments (rather than ';') so just ignore any lines in imported echolists that begin with a non-alpha-numeric character.

*always* set the KILLSENT attribute flag on email/netmail received for relay via SMTP (regardless of the Internet/Fido netmail setting in SCFG).
The sender should already have a copy (e.g. in their outbox), if they want to keep it.

MSG_SENT is in the netattr field, not the attr field. Double-oops. Thanks Dan_C and Nelgin for bringing to my attention.

Reported by Deon George in https://sourceforge.net/p/syncterm/tickets/7/

- argv[0] does not always contain the full path to the executable, so that is
  not a good way to locate the exec directory.
- since we already need to know the ctrl dir and that is the normal place to
  put config files, that's where it shall be.
- jsdoor builds don't get a .ini file - I don't think they need it (?)

events aren't clicks (a click is button down then up, scroll events are
just button down).

Add support for scroll "buttons" (buttons 4 and 5).

When inkey() receives an ANSI escape sequence it doesn't need to consume, put the consumed characters into the keyboard buffer *ahead* of whatever else is in the keyboard buffer already. Uses new ungetkey() insert mode option.

The temporary pause toggle command (Ctrl-O) is now stored in the sbbs_t::console member so re-loads of the user-record (due to external changes) won't seemingly-randomly toggle off the user's temp toggle.

Oops. This is an important field too (set to 0x0020).
Reported by Ragnarok, thanks!

Fixes https://sourceforge.net/p/syncterm/tickets/10/ as well as various color
corruption issues in offline scrollback that date back to the sixel "stuff"

https://sourceforge.net/p/syncterm/tickets/8/
and
https://sourceforge.net/p/syncterm/tickets/9/

font_control() has been broken for some time, and is now fixed (and works
in curses mode now).
Paste needs to convert to the current codepage... it was actually pasting
UTF-8.

Assume the characters in the ungetkey-buffer are ASCII. This fixes the problem with getstr(..., K_AUTODEL) and PETSCII terminals, reversing the case (capitalization) of the first character typed.

command-line arguments to all connections.

Only set values in the bbs structure if it's actually there.

sourceforge.
https://sourceforge.net/p/syncterm/feature-requests/13/
This also addresses request 14
https://sourceforge.net/p/syncterm/feature-requests/14/
And disables uifc during startup.