This removes the WIRE_FINAL_EXPIRY_TOO_SOON which leaked too much info,
and adds the blockheight to WIRE_INCORRECT_OR_UNKNOWN_PAYMENT_DETAILS.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
updates the bolt version to 6639cef095a2ecc7b8f0c48c6e7f2f906fbfbc58.
this requires us to use the new bolt parser at generate-bolt.py
and updates to all of the type specifications (ie. from u8 -> byte)
