disabled download.linuxaudio.org

[Graham Percival]

Hi guys,

After getting umpteen warnings about rsync-linuxaudio.org failing due
to a changed SSH key, I've disabled it.  This comes right after I've
uploaded 2.13.19, but oh well.

Can anybody confirm that:
    7b:fc:0d:19:75:34:4a:a8:86:58:d4:94:ff:b8:47:70
is the new ssh key of download.linuxaudio.org ?

Jan, once that's been confirmed, you'll probably need to update the
~/.ssh/  ... at least, I certainly *hope* that I don't have access to
that part.  :)
eventually we'll migrate that into the shared ~/lilypond/ area, but
that's not a priority.

Cheers,
- Graham