Changes with nginx 0.5.7 15 Jan 2007

    *) Feature: the ssl_session_cache storage optimization.

    *) Bugfixes in the "ssl_session_cache" and "limit_zone" directives.

    *) Bugfix: the segmentation fault was occurred on start or while
       reconfiguration if the "ssl_session_cache" or "limit_zone"
       directives were used on 64-bit platforms.

    *) Bugfix: a segmentation fault occurred if the "add_before_body" or
       "add_after_body" directives were used and there was no
       "Content-Type" header line in response.

    *) Bugfix: the OpenSSL library was always built with the threads
       support.
       Thanks to Den Ivanov.

    *) Bugfix: the PCRE-6.5+ library and the icc compiler compatibility.