http://rakshasa.no/pipermail/libtorrent-devel/2009-November/002361.html Doesn't seem to be any changes that will require any change to the ebuild, so probably just a number-bump. Reproducible: Always
Patch files/rtorrent-0.8.2-gcc34.patch named in rtorrent-0.8.5.ebuild has been accepted upstream, so there's no need in applying it anymore.
Both in Portage. I've cleaned up the ebuilds a bit, old flag filtering from 2005/2006 most likely not needed anymore with current libraries and toolchain, if that's causing some issues... Please open a new bug, thanks. :-)