Patch for HPSS 7.3.2p2 readdir

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
1.2.6.5.sx9: clean management of EXDEV

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
1.2.6.5.sx9: clean management of EMLINK

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>