Based on the discussion http://archives.gentoo.org/gentoo-dev/msg_8924a26149b5a0c1ba8c97043b47e8c1.xml we should change. Please proceed
+ 20 May 2011; Justin Lecher <jlec@gentoo.org> mktorrent-1.0.ebuild, + metadata.xml: + Default to largefile support, #358279 +