Changes with nginx 0.3.18 26 Dec 2005

*) Feature: the "server_names" directive supports the ".domain.tld" names.

*) Feature: the "server_names" directive uses the hash for the "*.domain.tld" names and more effective hash for usual names.

*) Change: the "server_names_hash_max_size" and "server_names_hash_bucket_size" directives.

*) Change: the "server_names_hash" and "server_names_hash_threshold" directives were canceled.

*) Feature: the "valid_referers" directive uses the hash site names.

*) Change: now the "valid_referers" directive checks the site names only without the URI part.

*) Bugfix: some ".domain.tld" names incorrectly processed by the ngx_http_map_module.

*) Bugfix: segmentation fault was occurred if configuration file did not exist; bug appeared in 0.3.12.

*) Bugfix: on 64-bit platforms segmentation fault may occurred on start; bug appeared in 0.3.16.