These are autogenerated, but now they export their own
MessageNamespace, as well as the raw csv.
They also expose their SubtypeTypes, MessageTypes and TlvStreamTypes,
though in theory these could clash (they don't for now, and it'd be
kinda awkward if they did).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell