from fix by /issues/788 by owner @ github, update dep w3lib, delete superfluous python_prepare_all(), correction to test phase

(Portage version: 2.2.10/cvs/Linux x86_64, signed Manifest commit with key 0xB8072B0D)
version bump, remove old

(Portage version: 2.2.8-r1/cvs/Linux x86_64, signed Manifest commit with key 2B6559ED)
Version bump (bug #516680 by Frank Krömmelbein).

(Portage version: 2.2.10/cvs/Linux x86_64, signed Manifest commit with key A792A613)
Stable for amd64 wrt bug #509374

(Portage version: 2.2.8-r1/cvs/Linux x86_64, signed Manifest commit with key D628E536)
Stable for amd64 wrt bug #515540

(Portage version: 2.2.8-r1/cvs/Linux x86_64, signed Manifest commit with key D628E536)