
{  The purpose of this request is to modify the stack attribute
{  which determines whether or not the pages beyond the current
{  top-of-stack pointer are freed. Only the stack of the caller ring
{  can be modified by this request.
{
{  MMP$CHANGE_STACK_ATTRIBUTE (stack_pages_to_be_freed, status);
{
{   STACK_PAGES_TO_BE_FREED: (INPUT, BOOLEAN) This parameter specifies
{      whether or not the pages beyond the current top-of-stack are freed.
{
{   STATUS: (OUTPUT, OST$STATUS) The request status is returned in this
{   parameter.
{
