Reduce Escape Timeout

[taviso]

If you're trying to back out of several menus by pressing the escape key a few times, 1-2-3 seems very slow. It's actually just waiting a second to see if the Esc is the first character in a sequence.

I think this timeout is too high for modern computers, this was probably written when you might using 123 over a lossy 2400 baud modem or something. In an xterm, we can make the timeout tiny.