x86: Not critical since BSDs that use this backend have no membind support,
but better fix it for uniformization.
(cherry picked from commit open-mpi/hwloc@a431361c7d)
OSF: Looks like nobody ever tried to play with memory binding on OSF/Tru64.
(cherry picked from commit open-mpi/hwloc@2d6c73356d)
Conflicts:
NEWS
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>