prompts on a per-user basis.
Eliminated unused node_misc bits and other constant definitions.

Using inkey() timeout instead of YIELD in cold-key loop.

Re-working spinning cursor code since no longer using mswait here.

HyperTerminal doesn't properly recognize NOPs and prints the char).

(sending NOPs instead of GAs and defaults is "on").

(defaults to 'off', previously always-on).

Beautified getkey() a little.

getkey() releases time-slices when called with node offline or input_thread not running (just in case).

Periodically sends Telnet GA (go ahead) command after 60 seconds of inactivity. This helps detect disconnected TCP sessions.

getkey() now returns immediately if input_thread isn't running (stops event thread from waiting for user input).

Created system call wrappers.c (and sbbswrap.h) and moved target platform-specific macros and code there.