用Proxomitron解决opera附件下载乱码

Proxomitron 中文讨论区的版主phoenix写的规则：

[HTTP headers]
In = TRUE
Out = FALSE
Key = "Content-Disposition: Opera Attachment File Name Fix 09.08.20 [phoenix] (In)"
URL = "$OHDR(User-Agent:*opera*)"
Match = "attachment; filename="\1""
Replace = "attachment; filename*=gb2312''$ESC(\1)$LOG(RRESP $DTM(c) : Content-Disposition: Attachment -> Name Fix for Opera!)"