ARS keywords. These require that user->cursub and user->curdir are initialized
with the proper internal code associated with the current sub/dir of the user.
These ARS keywords were previously only supported in the chk_ar internal to the
Telnet/RLogin server (chk_ar.cpp).

unbaja.c:1830: warning: pointer targets in passing argument 1
of ?decompile_ars? differ in signedness

(Semaphore checks could have resulted in hung threads)

This should get 'er Fidde.

defaults, but I can't find anywhere to frob this.

session thread from being stopped/restarted every time the select() times
out for the semaphore check.

(or packing for FTP download).

HTTP server optimizations.

0 = linger disabled (no time-out value)
non-zero = time-out value (in seconds), linger enabled

Close this end too.

recv() error, pass socket by reference rather by value, rely on a much more
natural termination sequence:
1) When terminate_server is set, close_request() always ends the session.
2) The session will now complete when terminate_server is set.
3) The output thread waits until the session is complete.

One int -> SOCKET fix.
etc.

active_clients could probobly be used for this, but it seems to work
differently...

[re]init.

(bugs found by Deuce ala Valgrind).

LDFLAGS from being reflected in UTIL_LDFLAGS.

No longer use socket_check() to check for readability as the recv() call
in there was using up over 30% of the CPU time.

name or alias. More sanity checking of the RLogin-supplied "password" is
probably prudent here (Deuce?).

time-stamps.

created.

Found by Valgrind.

(not in the underlying servers and services). Since touching ctrl/recycle
already reloads the configuration files in the various servers and services,
this was redundant and potentially confusing.