Keep in mind that "other platforms" includes "different installs of the distro that haven't done the /usr merge yet" and "very close forks of the distro", but i

Keep in mind that "other platforms" includes "different installs of the distro that haven't done the /usr merge yet" and "very close forks of the distro", but in practice copying it to any distro still worked. And of course you haven't considered the "what package installed this file" half of my post.