new: rtorrentGit

Add latest git of libtorrent and rtorrent which contains numerous C++11 changes and configuration syntax changes.  Also adds patch to rtorrent enabling support for colors.

Updated rTorrent Config File Example:
https://github.com/codyopel/dotfiles/blob/master/dotfiles/rtorrent.rc

Color Patch Details:
https://github.com/Chlorm/chlorm_overlay/blob/master/net-p2p/rtorrent/README.md