rfkill: Pull 61-gnome-bluetooth-rfkill.rules here to upstream

It lives in the Debian and Fedora packages at least, and I stopped
digging through downstream package crap after that.  From the mailing
list discussion, yeah, while Marcel has a point, in practice, console
users can shut down the machine too...

And many downstreams ship NetworkManager with permissions such that
the user can control system networking to a large degree.

Given that, let's just pull this upstream, anyone who doesn't want it
can work on engineering something else (which is likely making
NetworkManager be a proxy).

The *real* reason I'm doing this is because it avoids librfkill-glib
as used by gnome-shell spewing a g_warning() on start.

https://bugzilla.gnome.org/show_bug.cgi?id=711373