Milestone Avahi 0.6.18

This is a bugfix release, adds a few new features and includes a new component.

• Add a new library libavahi-ui which contains a standard Gtk dialog for browsing for services, and a new tool "zssh" that makes use of it, which allows browsing for SSH and VNC servers and starts ssh or xvncviewer if one item is selected.
• avahi-autoipd has been ported to FreeBSD (original patch from Bruce M Simpson)
• Improve OpenBSD, Solaris, MacOS X compatibility
• Linux inotify support for monitoring /etc/avahi/services/ and /etc/avahi/hosts for changes. (Original patch from "behanw")
• Add the ability to dump the service type database from avahi-browse with the new option "-b".
• Enable GCC stack smashing protection if available and working (Patch from tedp)
• Improve compatibility with Bonjour's libdns_sd (patch from Chris Rivera)
• Various updates to the service type database (based on patches from uws)
• Fix a local DoS vulnerability (very low priority, all you can do is make Avahi hit an assert()); problem identified by "jamesh"
• Fix a problem when constantly generating conflict events for an RR
• Fix registration of very large RRs (original patch from Sjoerd Simons)
• Various minor fixes

This release is backwards compatible with Avahi 0.6.x with x < 18.