* correctly handle empty domain names (i.e. the root zone)

* correctly handle empty domain names (i.e. the root zone)
* fix memory initialization error in wide-area.c
* make server_add_xx() functions atomic, i.e. clean up half-created entries on failure
* add some more validity checking macros and change everything to make use of them
* clean up avahi_server_add_address()
* change some functions from domain.[ch] to work on a stack buffer instead of malloced memory
* update avahi-test.c a little
* replace avahi_reverse_lookup_name_{ipv4,ipv6}() with a single function avahi_reverse_lookup_name()
* remove avahi_server_add_dns_server_name() from public API

git-svn-id: file:///home/lennart/svn/public/avahi/trunk@845 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe