 a "you're destroyed" message indicating that the locks
were not granted because the member's service was destroyed.  The
thread destroying the non-grantor lock service blocks until it
receives an acknowledgment message from the grantor saying that the
grantor has cleaned up all pending requests.  This blocking prevents
race conditions if a member were to successively destroy and recreate
the same named lock service.

[What do we do about lock request messages that have been received by
the grantor, but hav