Code review comment for lp:~andreas-pokorny/mir/load-all-supported-input-platforms

There is now a silo for vivid overlay and this newer libinput package is about to land in xenial:
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-056/+packages

With that the known touchscreen troubles are gone - mouse is still fast though (as actually requested by many people)