Site upload is not compatible with sourceforge.net changes

After last changes in sf.net infrastructure there are three ways of
uploading stuff to web area:

1. sftp
2. scp
3. rsync over ssh

I've tried two first options and they both failed. Maven uploads zip
file (wagonXXXX.zip) and then tries to unzip it. However unzip
command is not available.
As far as I understand, Maven doesn't support site deployment via rsync.

So technically it is impossible to use Maven for site upload to sf.net

See http://sourceforge.net/community/forum/topic.php?id=3518&page for sf.net announcement on this changes.