{
{   The purpose of this request is to purge the permanent file root for
{ the given set.  The permanent file root may or may not have been stored
{ previously.  If the root was stored previously the root is discarded.
{
{       STP$PURGE_PF_ROOT (SET_NAME, STATUS)
{
{ SET_NAME: (input) This parameter specifies the name of the set for which
{       the permanent file root is to be purged.
{
{ STATUS: (output) This parameter returns the request status.
{
{        CONDITIONS: ste$set_not_active
{                    ste$master_not_active
{                    ste$not_allowing_access
{                    ose$job_pageable_full
{
{        IDENTIFIER: stc$set_management_id
{
