MORE Fix get_gsh_export_by_path and get_gsh_export_by_pseudo

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
MORE Add routines to mount an export in the new Pseudo FS

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
MORE Convert to using new Pseudo FS

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>