Changes with nginx 1.9.1 26 May 2015
*) Change: now SSLv3 protocol is disabled by default.
*) Change: some long deprecated directives are not supported anymore.
*) Feature: the "reuseport" parameter of the "listen" directive. Thanks to Sepherosa Ziehau and Yingqi Lu.
*) Feature: the $upstream_connect_time variable.
*) Bugfix: in the "hash" directive on big-endian platforms.
*) Bugfix: nginx might fail to start on some old Linux variants; the bug had appeared in 1.7.11.
*) Bugfix: in IP address parsing. Thanks to Sergey Polovko.