Update scripts to work around two sh(1) bugs found in stable/8:

Update scripts to work around two sh(1) bugs found in stable/8:
1) _x=$((_x + 1)) does not work while x=$((x + 1)) does.
2) Parameter Expansion, esp. "${x%%bar}" does not work if quoted.

Correct typos and improve some details forwarding.sh already
had in initiator, esp. related to ipfw accepting if the default
is deny.

Add an extra stat call to the "delay" function in addition to the
touch which together is still a lot faster than sleep 1 but seems
to help a lot more to mitigate the unrelated kernel race seen.

Sponsored by:   Cisco Systems, Inc.