Since Google (and a lot of the outside) is so engrained with using
^C as interrupt, I'd like to be able to use it in 9term if I've
stty'd my intr to ^C. Without this, hitting ^C still works but if
the program behind the window isn't reading from /dev/cons, it won't
take effect till after I hit a newline which is often very confusing.
I know this is a hack since it only works if I stty intr ^C but that
seems the only other character that gets used anyways.
Change-Id: I0597e63b2d7628f5668c648e6dba6f281e4b27fd
Reviewed-on: https://plan9port-review.googlesource.com/2742
Reviewed-by: Russ Cox <rsc@swtch.com>