rtorrent 0.9.2/0.9.3/0.9.4 xbian package ready for tests

[koper89]

I included curl because i wanted to add Asynchronous DNS support.
And xmlrpc to libxml2
But I'll delete them if needed, I would like to stick to nginx+php5-fpm because it's really lightweight, but I'll try to find how to detect webserver and try to adapt (but I don't know if I'll be able to detect php5-fpm or php5)

Best wishes