Changes with nginx 0.8.38 24 May 2010

    *) Feature: the "proxy_no_cache" and "fastcgi_no_cache" directives.

    *) Feature: now the "rewrite" directive does a redirect automatically
       if the $scheme variable is used.
       Thanks to Piotr Sikora.

    *) Bugfix: now "limit_req" delay directive conforms to the described
       algorithm.
       Thanks to Maxim Dounin.

    *) Bugfix: the $uid_got variable might not be used in the SSI and perl
       modules.