(apparent cause of Win32 lock-up when closing socket from non-owner thread)
using bool terminate_server instead, which doesn't abort select(), so using
shorter default sem_chk_freq value (2 seconds vs 5).

processor handles mail message and deletes the recipient list file.

expand_fields (default: true), call with this argument set to false to not
create header fields that do not exist in the SMB version of the msg header.
This is required if the script is going to later re-write the header (with
put_msg_header) and avoid a failed write due to an illegal hdr size increase.

for 3rd party modifications/modules (properties, methods, objects).

"DONT TERMINAL TYPE" Telnet command before passing through traffic from the
remote server (allowing renegotiation of the Terminal Type from the telnet client).

to support >30-bit integers (e.g. current time_t values).

We no longer need ars.obj (artstr function).

compile AR strings for SCFG).

compile AR strings for SCFG).
Macro paths (e.g. UIFC_SRC, XPDEV, and SBBS_SRC) do not end in slash.

(via the "%R" cmd-line specifier or the JS "reverse_path" property).

arguments/properties for external mail processors.

Some bits are probobly still technically "wrong" but it's a heck of a
lot better than the cruft.tmp solution used previously.

external mail processors (via the recipient list file).

(default: listserver@system.inet_addr).
config->names key renamed to config->aliases.
Added support for list descriptions (defaults to sub-board description).
Beginning of support for control commands.
Support for moderated contributions.