We don't need to patch it in anymore, now it's merged. However, we do
move the message itself from onion_wire.csv to peer_wire.csv (we
should get more sophisticated with our parsing, but this works for
now!).
The resulting peer_wire.csv is identical, the onion_wire.csv file is
slightly reordered.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
