lstree: fix on osx if gfind is available

Signed-off-by: Christopher Larson <kergoth@gmail.com>
find-all-games-identified: pick up stuff in Games.dmg

Signed-off-by: Christopher Larson <kergoth@gmail.com>
update-games-gist: fix test

Signed-off-by: Christopher Larson <kergoth@gmail.com>