{
{  The purpose of this request is to associate a previously opened
{ file with a different segment number. The old segment is deleted
{ when the new segment number has been assigned.
{
{     MMP$CHANGE_SEGMENT_NUMBER (segment_pointer, segment_number,
{       validation_ring_number, new_segment_pointer, status);
{
{ Segment_pointer: (INPUT) This parameter specifies the process virtual
{    address of the segment.
{
{ Segment_number: (INPUT) This parameter is the new segment number
{    to be associated with the file.
{
{ Validation_ring_number: (INPUT) This parameter specifies the ring
{    of execution for whom the segment is being modified. The ring
{    number used for validation is the maximum of the caller ring
{    number and the 'validation_ring_number'.
{
{ New_segment_pointer: (OUTPUT) This parameter specifies the process
{    virtual address of the file with the new segment number.
{
{ Status: (OUTPUT) This parameter specifies the request status.
{    CONDITIONS:
{         mme$ring_violation
{         mme$unsupported_segment_kind
{    IDENTIFIER: 'MM'
{

