Deadwood 2.3.03 released and snapshot update

Since MaraDNS requires lines like upstream_servers = {} before any lines like upstream_servers["."] = "10.1.2.3", I have fixed both Deadwood 2.3 and the current snapshot to be able to parse the upstream_servers = {} line without thinking it's a syntax error.

This hotfix only makes the above line parse without error; it's a 3-line change to the source code. The line doesn't do anything and I will not make it mandatory in Deadwood 2.3, so that this bugfix-only update doesn't break current existing configurations.

Note that Deadwood 2.1 will not be updated with this fix.

This release can be downloaded at maradns.org/deadwood