Bug#689814: unblock: gnuradio/3.6.1-1

[A. Maitland Bottoms]

>>>>> Mehdi Dogguy <me...@dogguy.org> writes:
> It is a pity that the package didn't migrate due to a transient build
> failure, but it is not an argument to unblock it. Besides, the diff
> between testing's and sid's gnuradio looks rather large