Changes with nginx 0.7.34 10 Feb 2009
*) Feature: the "off" parameter of the "if_modified_since" directive.
*) Feature: now nginx sends an HELO/EHLO command after a XCLIENT command.
*) Feature: Microsoft specific "AUTH LOGIN with User Name" mode support in mail proxy server.
*) Bugfix: in a redirect rewrite directive original arguments were concatenated with new arguments by an "?" rather than an "&";the bug had appeared in 0.1.18.
*) Bugfix: nginx could not be built on AIX.