qtads: add 2.1.6, remove old, update live ebuild
tree1d2ec1c24531af2ee21706f4610d2ee893e45fe6
drwxr-xr-x - dev-games
drwxr-xr-x - dev-lang
drwxr-xr-x - games-engines
drwxr-xr-x - games-util
drwxr-xr-x - licenses
drwxr-xr-x - metadata
drwxr-xr-x - profiles
drwxr-xr-x - virtual