travis: Symlink Cython and dbus-python from distribution packages
travis: Symlink Cython and dbus-python from distribution packages

jbaiter/spreads,nafraf/spreads,gareth8118/spreads,gareth8118/spreads,DIYBookScanner/spreads,DIYBookScanner/spreads,gareth8118/spreads,miloh/spreads,DIYBookScanner/spreads,nafraf/spreads,jbaiter/spreads,miloh/spreads,adongy/spreads,adongy/spreads,jbaiter/spreads,nafraf/spreads,adongy/spreads,miloh/spreads