use inkey()/ungetkey() and don't work with down-arrow (ctrl-J). This should
be okay now that input_thread auto-converts Telnet's CR/LF to CR.

in the if() - no functional change.

method would insert keys at end of the input ring buffer. This was fine if
there weren't already chars in the buffer. But if there were already chars in
the input buffer, ansi_getxy() would then move keys to the end of the input
buffer until it found the <ESC>[y;xR response it was looking for. This garbled
the user's input in split-screen chat as reported by JasHud and others.
If there was a RingBufInsert() routine, we could use that instead, but this
separate "ungetkey" buf will do for now.

ungetkey() now puts keys directly into the input ring buffer (no more keybuf).
handle_ctrlkey() no longer pushes entire unsupported ANSI escape sequence into
the input buffer (causing an infinite loop).

CON_R_ECHOX and CON_L_ECHOX, then sends "\b \b"

Replace all instances of [br]puts("\b \b") with call to backspace()

This fixes once and for all the "spaces entered at password prompt are
echoed as spaces" problem.

Har.

PR:42->closed

Removed YIELD call since we're waiting for ringbuf semaphore instead.

old 486 hardware!

- same as ESC[K and ^E.

one check for ctrl-keys.

of control key combinations in inkey() via SCFG or script.

mechanism now limiting them to a total maximum depth of 2.

Corsor position report logged.

Move internal sysop page (random tones) from getkey() to inkey() and replaced the short tones in msgabort() (every 100th call).

Removed unused code.

Each function that requires a temp string variable, now has its own "tmp" local variable.