This makes for an interesting situation in which programs compiled
 to use flock() and running on the server will not see the locks that
 are set by the clients. The clients will, however, see both POSIX and
 flock() locks set by other clients.

 It is the best you can do, given the limitations of the protocol.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>