Event and a Semaphore (using sem_init).
output_sem is now initialized immediately in sbbs_t::init() so if init() fails,
the semaphore can be destroyed without causing a segfault.

Node: This SHOULD pass command-line arguments to child make but doesn't/

[21:39] * Deuce chortles.
[21:39] <DigitalMan> I'll move it later. :-)

touched in the first place (Twice the bugs in half the time!) use
use -D_THREAD_SAFE to compile object files for a threaded app (You have to
do that on BSD already anyways)

Removed excessive #ifdef __QNX__ blocks.

Eliminated some comment-out code.

Checking return value of getnodedat() before calling putnodedat().

mod.

here.

Renamed "curr_socket" local var in input_thread to just "sock".

realloc it.

Linux		    No		    Yes
FreeBSD		    Yes		    Yes
OpenBSD		    No		    No
NetBSD		  Yes(lib)	    No
QNX		    No		    Yes

*sigh*

Get rid of startup.h kludge but makeing YIELD() an empty macro in nopen and
getuserdat

*blush*

Of course, Win32 could use a real yield *hint hint*

NOTES:
------
startup.h has an ugly YIELD kludge in it, and includes both ringbuf.h and
threadwrap.h.  However, it is sometimes used in non-threaded utils.
This must be fixed!

if the child changes ANY value.