e.g. ANSI.SYS doesn't appear to support it

I'm not sure how long this has been like this, but the last_msg
of a sub-board can be a super high number (e.g. in the billions), so using
that value as the highest message offset would cause tons of message index
read failures and just cause this loop to interate unneccessarily through
tons of non-existent messages. Also, this code is utter crap.

SBBS v3.19 introduces a built-in FileBase class. To resolve this
conflict, rename the soon-to-be-deprecated FileBase object to
OldFileBase.

This option fixes the fact that the following two lines sometimes
place the variables in different scopes at the top-level of included
scripts:
var x = 1;
y = 2;

I plan to use this to experiment on if this is what's causing much
of the remaining scope chain weirdness... it certain explains some
things we've been seeing (and possibly even things like the METHODJIT
issues DigitalMan saw yesterday).

Enabling in sbbs/jsexec is a much bigger lift, but this change may
end up being all upside... the docs have suggested this option always
be set since it was originally introduced, and now that I understand
scopes better, it's pretty clear why that is.

May fix an issue when dead players enter the game?

METHODJIT (JägerMonkey) is doing weird stuff with xtrn_sec.js when
enabled, so don't introduce that noise.

This was the bit that irritated me the most about CNW, so I fixed
it.

You can copy this whole thing over your LORD2 install, or copy/symlink
the JS files in here and run it here.

Complete New World is a massively expanded LORD2 world, but it has
not been nearly as well-tested with the JS implementation.

Player 0 of course is not valid, and lord2.js would crash.
Properly handle this for getname and deleted so Bartender at the
Red Dragon can tell you there's no teams.

This allows the services thread to terminate correctly.

- Default gender of ' ' (instead of '')
- Don't write the gender to the user's birthdate

Maybe fixes this report from ragnarok:

Node 1  !JavaScript  /sbbs/exec/load/menu-commands.js line 59: TypeError: Commands.User.Find is undefined

make it look a bit more almost okay.
No functional change - unless I broke something, then there's a
HUGE functional change.

tonight without cringing myself to death.
"echicken authored 6 years ago" ... yikes, I can practically smell
the whisky coming off of this file.

Wrap calls to bbs methods in a function, use that as property.
Formatting changes so that if I ever work on this again in the
future it will look slightly less horrible.
Changes were made for ragnarok; if you're not him, you probably
shouldn't use this.

Exit immediately if client attempting redirect to arbitrary external site. (This won't work for them anyway, but no need to run the rest of the script.)
Use js.exec() for components instead of load().
Use <? ... ?> instead of <?xjs ... ?> for XJS one-liners.

listSubs doesn't need to return that much detail. New stuff will be exported as part of 'forum' object, for use with require().