And remove the now-unused string-based helper functions. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Although it's deprecated already (because it stores as string), it's better to make the name explicit. And create a new helper which stores as BIGINT. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We're going to reuse the database controllers for the accounting plugin