MaraDNS snapshot update

I've updated some of the documentation, the changelog, and a couple of web pages (updating the date of the last MaraDNS release to August 4, 2009; updating the advocacy page to point out the djbdns now has three security issues in its latest tarball)

I've also removed older MaraDNS snapshots, since we have just released MaraDNS 1.3.14.

It can be looked at here

OK, back to Deadwood.