There's no reason to call access() before stat() since stat() will fail
(return -1) if the file does not exist.

Loads child scripts (finger.js, sbbsimsg.js) quicker.
Note: irc.js can't be load()ed from here because it calls exit().
Now using appropriate strings from text.dat (R_Chat, ON, OFF).
Added modopts.ini [chat_sec] irc option (disable IRC access by setting to false).

console.ctrlkey_passthru state.
As it was, if the irc.js abended, many ctrl-keys (e.g. ^C) would not work
after exiting. A lot of scripts that much with the console.ctrlkey_passthru
have this/similar issue and this is a simple but very reliable fix.

(mostly migrated from exec/finger.js).

tickit.js version pulled from $ID string in .js file.
tickit version used in Created by line.
tickit version used in Path line.
utc time stamp of processing used in Path line per FTS-5006.001.
per area uploader.
address selection:
   per area aka matching in From and Path lines.
   per area source address in From and Path lines.
   global aka matching in From and Path lines (original addressing method).
   global source address in From and Path lines.
   main FTN address from system.fido_addr_list (preferred but last in line with
the above overrides).
can use domains on linked systems' addresses in sbbsecho.ini again.
can use domains on any address in tickit.ini.
domains are NOT currently written to the generated TIC files to avoid creating
possible problems for other TIC processors.
force replace is available globally and per area in the ini and not only the
command line.

the beginning of a SAUCE record and the end of very old MS-DOS text files.
Added support for ESC[1;1f/H (home cursor) and ESC[0J (clear to EOS) sequences
(converted to the equivalent in Ctrl-A codes).
Output Ctrl-A characters in uppercase, as they were documented and as is
common practice.
Covert ESC[xB and ESC[xD to the appropriate Ctrl-A sequences rather than
converting to ASCII ctrl chars (CR, LF, BS).

Ctrl-AJ (clear to EOS)
Ctrl-A` (home cursor)

Oct-14-2018:
It turns out, PabloDraw actually inserts a Ctrl-AZ sequence at the end of .msg
(and presumably Synchronet .asc) files it edits - before the SAUCE record.
This resulted in a printed Ctrl-Z character (arrow pointing right) in most
terminals when viewing text/menu files created or edited with PabloDraw. :-(
So, now Ctrl-AZ (uppercase) will revert to the previous definition:
premature end-of-file (EOF)
and a Ctrl-Az (lowercase) will output a Ctrl-Z (substitute) character.
I'm not a big fan of case-sensitive Ctrl-A codes, but frankly, running out of
chars and I already started this pattern with the Ctrl-AF/f sequences.
Hopefully there's no existing software that is/was putting Ctrl-Az (lowercase)
in files, expecting that to trigger a premature EOF. I certainly was not.

- this change is dependant on the updated load/modopts.js.
Cache the presence_lib and nodelist options in the bbs.mods object to speed
up the re-loading of this script from the BBS. This means that changes to the
presence_lib or modopts.ini will require the user log-off/back-on to experience
the changes (only for the nodelist module).

of the user_age_and_gender() method.
Changed options.web_inactivity_timeout to just options.web_inactivity to be
more consistent with the existing modopts.ini [web] option naming.

You may now request the value of a single modopts.ini key value (optionally
specifying a default option value), via:
    optval = load({}, 'modopts.js', 'modname', 'optname');
or:
    optval = load({}, 'modopts.js', 'modname', 'optname', default_optval);

This usage will return just a single option value rather than an object
containing properties reflecting all the options in the [modname] section.
The pre-existing usage is still supported (and preferred in most cases).

(default: 'browsing' - to match web UI verbiage).

(includes web v4 users logged-in/recently-active).
Added 'W' / who's online command to those shells that didn't have it
(except for Wildcrap!) - equivalent of the Ctrl-U global hot-key.

'include_web_users' is set to false in the [nodelist] section of the modopts.ini
Document the arguments supported in comments.
It's no '-noself' instead of '-notself' to exclude own node from output.
Also more/better "use strict" enforcement.

Provide better example of constructing/using User objects.

Added more comments and use 'var' when defining a new variable
(though 'const' might be better here, don't want to risk that change atm).

numbers beginning w/0 are interpretted as octal by parseInt() by default.

0-byte .msg files are normal and do not mean a msg is waiting for the user.

include_location (defaults to true)
New comments at the top documenting the modopts.ini settings available.
Include misc flags (M for msg waiting, P for do-not-disturb) in web user status
active-users.json was excluding node with the POFF (do not disturb) flag set,
thus making the do_not_disturb property kind of moot - fixed.

Added properties to web_user object: do_not_disturb and msg_waiting

The active-users.json response now includes a 'prot' (protocol) object, just in
case we want to use that in the future.

derived from a portion of ecwebv4's ndoelist.js.
TODO (echicken, help!): fill-out the 'action' property from the web session and
double-check on the logontime value (can we get this from the session blob?).

Much of the code in these 2 modules was moved/migrated to the new presence_lib
and made more reusable/modular.

Migrated mostly from exec/nodelist.js, some from fingerservice.js.

when sending the "ANSI" output to stdout (and not a file).

Otherwise the temperature will appear to be hot hot hot but actually be in kelvin.

key to [web] section.

(to be consistent with [nodelist]):
- include_age
- include_gender
and they can be separately controlled.
Also fixed a 'use strict' violation I didn't find before with assignment
to an undeclared variable (uname).

If a SessionPwd (in sbbsecho.ini) value was (just) a number, it would
barf-up binkp.js and cause an authentication BinkP failure for that node.

example is now actually a functional replacement for the 'exec/node list'
command (e.g. using 'jsexec nodelist') and a replacement for the hard-coded
Ctrl-U (who's online) handler. To install, run 'jsexec nodelist install'.
Supports modopts.ini [nodelist] settings (default to false):
- include_age
- include_gender
Other than the new age/gender options, *should* function identically to the
hard-coded nodelist() and whos_online() functions from getnode.cpp