MaraDNS snapshot update

I have made a couple of changes to MaraDNS today:

• I have removed deadwood-1 and updated deadwood-2 to be deadwood-2.1.01 in the MaraDNS tree; this syncs the MaraDNS and Deadwood releases. This saves me from having to maintain two Deadwood trees (Deadwood-1's TCP code didn't work). One of my plans for Deadwood-2.3 is to have it be modular, so people who don't want caching can remove all caching code from Deadwood-2
• Since I got yet another request for having a "all DNS queries return the same IP" setup, I have added microdns to the tools/misc directory of MaraDNS

The snapshot can be downloaded here.