Deadwood updates

IPv6 now works with Deadwood and there's a new SQA regression to test the ip_blacklist feature. In addition, the synthetic "not there" reply now correctly echoes the client's ID, and another test caught a floating point exception ("foo % a" in C needs to make sure a is 0 or bad things happen) in some of the code I added before in the 2.4 branch of Deadwood.

I've updated the tests and should be able to release Deadwood 2.4.06 tomorrow.

In the meantime:

http://maradns.org/deadwood/snap/