{
{   The purpose  of  this  procedure  is to store information about the master
{ volume in the active set table when the master volume has become active  and
{ the  active set table entry exists.  This information is all obtainable from
{ the master volume set table.
{
{       STP$STORE_AST_MASTER_HEADER (AST_INDEX, MASTERS_AVT_INDEX, SET_OWNER,
{         DM_PACKET_STORAGE, PF_ROOT_STORED, PF_ROOT, STATUS)
{
{ AST_INDEX: (input) This parameter specifies the set.  The set must have been
{       located in the active set table prior to calling this procedure.
{
{ MASTERS_AVT_INDEX: (input) This parameter specified  the  device  management
{       active  volume  table  index for the master volume.  This was an input
{       parameter on the STP$DISK_VOLUME_ACTIVE request.
{
{ SET_OWNER: (input) This parameter specifies the set owner.
{
{ DM_PACKET_STORAGE: (input) This parameter specifies  the  device  management
{       storage record for the master volume of this set.
{
{ PF_ROOT_STORED:  (input) This parameter specifies whether the permanent file
{       root has ever been stored.  IF TRUE the pf root parameter is  used  to
{       store the pf root into the active set table.
{
{ PF_ROOT:  (input) This parameter specifies the permanent file root.  This is
{       only used if PF_ROOT_STORED = TRUE.
{
{ STATUS: (output) This parameter returns the request status.
{
{       CONDITIONS: ose$mainframe_pageable_full
{
{       IDENTIFIER: stc$set_management_id
{
