Two changes:
1. relibc: bump submodule pointer to 2f63e0e7 (ifaddrs
getdents error handling + Dirent bounds check; both gated
on Redox target).
2. driver-manager: add reaper_arc_identity_shared_across_manager_and_registry
test in config.rs. Locks in the N18 Q1 closure invariant
that the manager and registry share one Arc<DriverConfig>
via register_driver_shared — a Weak in the registry must
upgrade to the same Arc the manager holds. If a future
refactor breaks Arc-identity (e.g. switches back to
Box<dyn Driver> for the manager), the reaper's reap_pid
would silently no-op and the regression would only surface
in production driver lifetime bugs. This test catches that
regression at unit-test time.
vasilito
5dd7124ef0