138a47b8f9
This is best for 2 reasons: - It's feels cleaner doing first creation of rings/strips and then the group assignment. The other option is making groups iterate other all rings/strips and selectively skip those not meant for it, which sounds somewhat redundant. - Some minimal accounting of rings/strips without group restrictions is needed for meta_wayland_tablet_pad_get_label(). The rings/strips memory is now owned by MetaWaylandTabletPad instead of groups, which is sort of meaningless since all are meant to go at the same time.