Update notes for submitted changes

* futex: Prevent attaching to kernel threads
Update notes for submitted changes

* futex: Add another early deadlock detection check
Update notes for submitted changes

* futex-prevent-requeue-pi-on-same-futex.patch futex: Forbid uaddr == uaddr2 in futex_requeue(..., requeue_pi=1)
Update notes for submitted changes

* futex: Validate atomic acquisition in futex_lock_pi_atomic()