{
{   The purpose of this request is to change the name of a family in the
{ permanent file system.   This request may only be issued by the
{ set owner, the system administrator or the family administrator.  The family
{ specified by new_family_name must not already exist in the permanent file
{ system. This request should only be issued in an idle system, since it
{ will cause jobs not to recover in the event of a system failure.
{
{       PFP$CHANGE_FAMILY_NAME (SET_NAME, FAMILY_NAME, NEW_FAMILY_NAME, STATUS)
{
{ SET_NAME: (input) This parameter specifies the name of the set for which
{       the family is going to be changed.
{
{ FAMILY_NAME: (input) This parameter specifies the current name of the family.
{       If this parameter is all
{       blanks, the family name of the job making the request will be used.
{
{ NEW_FAMILY_NAME: (input) This parameter specifies the new name for the
{       family. If this parameter is all
{       blanks, the family name of the job making the request will be used.
{
{ STATUS: (output) This parameter returns the request status.
{
{       CONDITIONS:
{           pfe$bad_family_name
{           pfe$bad_set_name
{           pfe$duplicate_family_catalog
{           pfe$not_family_owner
{           pfe$pf_system_error
{           pfe$unknown_family
{           pfe$unknown_set
{
{       IDENTIFIER: pfc$permanent_file_manager_id
{
