Jklin <jk@jklin.com>: add good paging code and template cleanup,
enhance date sorting, merge DateTime.pm from openwebmail, give
me very helpful suggestion about index/cache design :-)

Shepherd <sheerli@gmail.com>: report Config.pm bug

Huzi <huzi1977@msn.com>: fix MailFilter rules bug, fix another
bug in SHA1 authentication module.

Benyu <bbenyu@gmail.com>: report login bugs

pch957 <pch957@163.com>: fix install documentation bug

Wang ming da <wangmd0217@hotmail.com>: suggest adding Cc/Bcc
header display capability for reading message.

njblue2004 <njblue2004@yahoo.com.cn>: report i18n problem

hmilycbz <hmilycbz@sina.com>: fix virtual host configuration bug
in INSTALL.

Condar <condar@163.com>: report critical bug when login with upper
case username or domain name.

ye_niu_zlg@hotmail.com: report translation missing problem

Fei <fei@bj.tom.com>: report userconfig initialization bug