Fixed broken Manifest file from lehitoskin for net-im/venom-9999.
Fixed own fix in a2c937ea09f8dbf85483bac74e40649e4de64ca1
Updated repository.xml (description).
Updated tox ebuild (econf instead of eusex);
for more information about econf, see:
https://devmanual.gentoo.org/ebuild-writing/functions/src_configure/configuring/index.html
Added RDEPEND to net-im/toxic.
net-libs/tox[av] is now needed for net-im/toxic[av].
Update.