{
{    The purpose of this request is to set the segment access
{ rights of a segment. The access rights are stored in the SDTX
{ of each segment.
{
{     MMP$SET_SEGMENT_ACCESS_RIGHTS (sdt_entry, sdtx_entry)
{
{ SDT_ENTRY: (input) This parameter is the segment descriptor entry for
{      the segment whose access rights are being set.
{
{ SDTX_ENTRY: (output) This parameter returns the segment descriptor extended
{      entry for the segment. The access rights for the segment have been set in
{      this entry.
{
