To be safe, we should never memcmp secrets. We don't do this
currently outside tests, but we're about to.
The tests to prove this as constant time are the tricky bit.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* Add BITCOIN_TEST_PROGRAMS to ALL_TEST_PROGRAMS
* Refactor bitcoin test make directives into its own Makefile under bitcoin/test
Signed-off-by: William Casarin <jb55@jb55.com>