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.