Changes with nginx 0.7.60 15 Jun 2009

    *) Feature: the "updating" parameter in "proxy_cache_use_stale" and
       "fastcgi_cache_use_stale" directives.

    *) Feature: the "keepalive_requests" directive.

    *) Bugfix: in open_file_cache and proxy/fastcgi cache interaction on
       start up.

    *) Bugfix: open_file_cache might cache open file descriptors too long.

    *) Bugfix: the "If-Modified-Since", "If-Range", etc. client request
       header lines were passed to backend while caching if no
       "proxy_set_header" directive was used with any parameters.

    *) Bugfix: the "Set-Cookie" and "P3P" response header lines were not
       hidden while caching if no "proxy_hide_header/fastcgi_hide_header"
       directives were used with any parameters.

    *) Bugfix: the ngx_http_image_filter_module did not support GIF87a
       format.
       Thanks to Denis Ilyinyh.

    *) Bugfix: nginx could not be built modules on Solaris 10 and early;
       the bug had appeared in 0.7.56.

    *) Bugfix: XLST filter did not work in subrequests.

    *) Bugfix: in relative paths handling in nginx/Windows.

    *) Bugfix: in proxy_store, fastcgi_store, proxy_cache, and
       fastcgi_cache in nginx/Windows.