[pkg-fgfs-crew] flightgear-data needs uploading

[Rebecca N. Palmer]

I've had simgear binNMUd, and confirmed that that fixes #765855/#767845, 
which leaves:

> , I suggest uploading flightgear with the fix for
> #750939 and requesting an unblock.
>
> Also don't forget #766251 in flightgear-data (yes, needing to upload
> ~1GB for a one-line fix is a pain, but it's RC so it has to be done).
> Upstream's translation update
> (https://gitorious.org/fg/fgdata/commit/1da6f87557f655047391161d529faea4930eacde)
> can also be included as those are explicitly allowed in freeze, but
> _not_ their other bug fix.