Changes with nginx 1.1.17                                        15 Mar 2012
    *) Security: content of previously freed memory might be sent to a
       client if backend returned specially crafted response.
       Thanks to Matthew Daley.
    *) Bugfix: in the embedded perl module if used from SSI.
       Thanks to Matthew Daley.
    *) Bugfix: in the ngx_http_uwsgi_module.
Maxim Dounin