Code review comment for lp:~andreas-pokorny/mir/libinput-package

(1) Needs fixing per above:

/mir/src/platforms/evdev/libinput_device.cpp:332:53: error: 'libinput_device_get_device_group' was not declared in this scope
     return libinput_device_get_device_group(device());
                                                     ^

/mir/src/platforms/evdev/libinput_device.cpp:332:12: error: use of undeclared identifier 'libinput_device_get_device_group'
    return libinput_device_get_device_group(device());
           ^

(2) Needs information: What's this?;
46 - ${Boost_PROGRAM_OPTIONS_LIBRARY}
47 + ${Boost_PROGRAM_OPTIONS_LIBRARY}G