PortMapper/MYDNSService.m
2009-04-29 More work on Bonjour classes. They now support registering services.
2009-04-27 Rewrote the Bonjour classes, using the low-level <dns_sd.h> API. They're now subclasses of MYDNSService.
2009-04-24 * Refactored MYPortMapper to use a new abstract base class MYDNSService; that way I can re-use it later for implementing Bonjour.