Changes with nginx 0.7.31 19 Jan 2009

    *) Change: now the "try_files" directive tests files only and ignores
       directories.

    *) Feature: the "fastcgi_split_path_info" directive.

    *) Bugfixes in an "Expect" request header line support.

    *) Bugfixes in geo ranges.

    *) Bugfix: in a miss case ngx_http_memcached_module returned the "END"
       line as response body instead of default 404 page body; the bug had
       appeared in 0.7.18.
       Thanks to Maxim Dounin.

    *) Bugfix: while SMTP proxying nginx issued message "250 2.0.0 OK"
       instead of "235 2.0.0 OK"; the bug had appeared in 0.7.22.
       Thanks to Maxim Dounin.