Filezilla IPv6 support

[Gea-Suan Lin]

We have tried to add IPv6 support feature for Filezilla, and now, there
is a beta version that you may use:

http://ccca.nctu.edu.tw/~ykchen/FileZilla/FileZilla-2.1.7-ipv6-src-20030717.zip
http://ccca.nctu.edu.tw/~ykchen/FileZilla/FileZilla-ipv6-20030717.exe