The Tor developers have officially stopped supporting the 0.0.9.x tree. An ebuild of Tor 0.1.0.x is needed, current stable version is 0.1.0.13: http://tor.eff.org/dist/tor-0.1.0.13.tar.gz The required libevent ebuild already exists.
*** This bug has been marked as a duplicate of 89787 ***