Basically, assume left is correct, and calculate the correct width
to fill the screen to the esge.

ARE YOU HAPPY NOW CYAN?!?!

Fixes *nix builds of Win32 programs.

Looks like I was partially restoring old code before I stopped.

Rather than depending on _WIN32 which is silly, make it clear what
exactly is being done and why.

Note that the spy socket stuff and some external stuff on *nix have
had the select() implementation removed.  To support using select()
on !Win32 will require de-refactoring that's not really worth doing.
Instead, just use #error and reference the commit where the old
code can be found.

Rather than defaulting to zero lines high and the width of the title,
default to the entire screen area.

Poll update

See merge request !116

Still needs updates in services_thread(), CGI stuff in websrvr.c,
and sbbs_t::external()

Found by digging through headers... Apple doesn't document this.

Just some more macOS silliness.

Sometimes the comment wasn't redrawn.
Also, remove configurable mouse actions stuff, not implemented in
13 years, I suspect I'll never do it.

While they both delete a character, delete at the end of a line will
move the next line up instead of moving this line up.

Fixes #243

Just in case it was read as a string (e.g. had a ; comment following the value)

caused it to be represented as JS string rather than number causing an issue
with login.js:
Node 1 terminal not detected, reducing inactivity hang-up timeout to 0 seconds

Redraw map before returning to startma/startma1

There's likely an ass-ton of these though.

Also check bbs.online for sbbs input.

Synchronet goes boom.

When a players map is set, it automatically triggers a player record
write.  When a new player is being created, the map is set before
the player is added via @addchar.

This attempted to write record number undefined in the player file,
which threw an exception.  Since exceptions are being caught, logged,
and ignored, this did not cause a problem, but did log an error when
it wasn't necessary.

This should never actually be done though since the map would be
completely empty.

Prevents a who's online list from aborting early when it encounters
and invalid player record.

Used by gcc in warnings.

If a '\r' is the last thing in the previous receive buffer.

Not all implementations set POLLHUP when a TCP socket is half-closed.

Was returning disconnected when it wasn't at times.

This likely unbreaks the things.

A socket isn't bad just because there was no incoming connections. :D