We need this for reestablishing a channel.
(Note: this patch changes quite a bit in this series, but reshuffling was
tedious).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It needs to save them to the db in case of restart; this means we tell
it about funding_locked, as well as the next_per_commit_point given
in revoke_and_ack.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
When adding their HTLCs, it needs all the information. When failing,
it needs the id as key and the failure reason. When fulfilling, it
needs the id and payment preimage.
It also needs to know when we have received an revoke_and_ack or a
commitment_signed, to place in the database.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
