* Unistall mysql service when unistall aamail
卸载时卸载mysql服务
* modify the password authenticate of webmail and cmail
修改webmail cmail密码验证
* keep to Sent default
缺省保存到发件箱
* fix the address book bug
修复地址簿的一个bug
* fix the mail delivery bug
修复邮件传递里面地址簿的bug
* fix the sender filtering bug
修复邮件过滤里面，发件人过滤的bug
* fix the mysql bug
修复mysql的一个bug
* upgrade database to mysql
数据库升级到mysql
* fix the bug of the space bar as receiver
修复了收件人为空格时的bug
* enable multiple database converting
允许各种数据库之间相互转换
