nginx更新1.1.14新版本，还为BUG修复版本

Changes with nginx 1.1.14                                        30 Jan 2012
) Feature: multiple "limit_req" limits may be used simultaneously.
) Bugfix: in error handling while connecting to a backend.        Thanks to Piotr Sikora.
) Bugfix: in AIO error handling on FreeBSD.
) Bugfix: in the OpenSSL library initialization.
) Bugfix: the "proxy_redirect" directives might not be correctly        inherited.
) Bugfix: memory leak during reconfiguration if the "pcre_jit"        directive was used.