Add ui method to set --ssh/--remotecmd, use it in init/clone/pull/push/in/out. The only user visible change is that 'hg init' now accepts this options, too.

#!/bin/sh

hg init
mkfifo p

hg serve --stdio < p &
P=$!
(echo lock; echo addchangegroup; sleep 5) > p &
Q=$!
sleep 3
kill -HUP $P
wait
ls .hg