Fixed issue where mwan3 would not immediately set interface down on link-loss event
Added feature to define last-resort action on policies with no members

Signed-off-by: Jeroen Louwes <jeroen.louwes@gmail.com>

Fix issue #219: Policy status output returns arithmetic syntax error

Signed-off-by: Jeroen Louwes <jeroen.louwes@gmail.com>

Fix issue icmp unreachables go out wrong interface
Remove unnecessary line

Signed-off-by: Jeroen Louwes <jeroen.louwes@gmail.com>

Add iptables -w option, which increases stability, requires iptables v1.4.20.
Code cleanup

Signed-off-by: Jeroen Louwes <jeroen.louwes@gmail.com>

Signed-off-by: Jeroen Louwes <jeroen.louwes@gmail.com>