New Deadwood snapshot

Some more work on the SQA tools for Deadwood:

Added new SQA tool, truncated, which always returns, over UDP, a "truncated" reply.

send_packet_stdin SQA tool should now be able to have pauses in the TCP packet it sends.

Starting tomorrow, I should have more time to dedicate to Deadwood development again and actually set up and run these DNS-over-TCP tests.