Updated indentation/brace style and comments.

warning C4229: anachronism used : modifiers on data are ignored

control messages without an argument (e.g. "DROP" instead of "DROP <conf-num>")
no longer worked because the qwkcfgline() function expected the message subject
to be padded with spaces (ASCII 32) per the QWK-spec, but changes in un_rep()
included truncating trailing spaces from QWK message subjects *before* control
message parsing occurred (causing this problem).
Thanks to Dreamer for reporting this problem (using MultiMail).

subjects shorter than 10 chars were not supposed to be hashed (for SPAM
detection), but the SPAM source is a bit position, not an ordinal, so the wrong
SPAM sources (body and msg-id) were removed from the hashing souce list rather
than the subject (which was still hashed).

(don't need 2 socket policy services)

extra_ports allows sysop to specify additional to-ports in response

the RLogin auto-external feature ("Web Externals") and the (old) RLogin
door-server feature.

Use 'logon' section of modopts.ini (this is the "Logon" module) to control
the RLogin auto-external feature and the (old) RLogin door-server feature.

Add External Programs link to left side nav bar
"External Programs" will allow users to execute external programs via their web browser, using the bundled flash telnet client (fTelnet).  This is accomplished via RLogin, which of course must be enabled for the feature to work.  A flash socket policy server is also required in order for the flash control to open a socket connection to the server.
The new feature is disabled by default, and may be enabled by modifying modopts.ini

executed via exec_bin() - this had the side-effect of causing background loaded
threads to terminate when the script terminated (rather than when the node
context was destroyed) and also caused the node context to be unused
(for mcmlxxix).

bools (and not strings).

stock or 3rd party JS modules. Created entry for the newuser.js module to
begin with.

from ctrl/modsopts.ini and return the key=value pairs as properties of an
object. This allows optional behavior/features in any JS modules (stock
or 3rd party) to be enabled/controlled by editing ctrl/modopts.ini rather than
modifying the JS module/script file itself (for Ree).

Expanded help text for "Loadable Modules".
Expanded help text for internal code prefix/suffixes and some other edits.
Internal-code prefixes are now automaitcally removed from imported file areas,
just like was already done for message areas, by the prep_code() function.
Imported internal-code suffixes are converted to upper case.
Updated indentation and brace style.
Replaced special unprintable help text chars with ASCII equivalents (` and ~).

and fTelnet RIP compatibility.

discontinuity every 7.5 seconds, but at least no crash.