- implement packages changelog support and their methods - remove unused searchPackagesKeyVersion method - remove checkReadOnly calls from most of the methods Entropy/EquoInterface: - implement support for package changelogs Entropy/PortageInterface: - implement support for package changelogs git-svn-id: http://svn.sabayonlinux.org/projects/entropy/trunk@2956 cd1c1023-2f26-0410-ae45-c471fc1f0318