on outgoing mail (send anyway).

low ports, even if DONT_BLAME_SYNCHRONET was not defined, which of course
would fail. Afaik, no Unix should allow this and I'm not sure why it was
using _THREAD_SUID_BROKEN (e.g. LinuxThreads) for this determination at all.

from_protocol and from_port JS msg header properties (and documented).

for additional tracking information.
Created DLL-exported msg_client_hfields() in postmsg.cpp as a common function
to add these client tracking header fields.

used to trace message origins for security reasons.

used to trace message origins for security reasons.

Using default definitions for these macros if already defined.

* Nick hunting for KILL, MODE, and friends wasn't working as advertised.

* Fix a problem with servers with uppercase letters in their servername.
* Fixed the annoying 'unknown origin' bug (aka the 'he said, she said' bug)

This should fix the 'undefined' crashes involving Selectable_Sockets_Map.

* Fix for 'undefined' being displayed in server info for QWK-connecting servers