Bump to 0.8

(Portage version: 2.2.8-r1/cvs/Linux x86_64, signed Manifest commit with key 0x2EDD52403B68AF47)
Stable for HPPA (bug #518006).

(Portage version: 2.2.12/cvs/Linux x86_64, RepoMan options: --ignore-arches, signed Manifest commit with key A792A613)