{
{   This procedure  searches  a member entry list of an active set table entry
{ for a specific volume.  The set must previously have been located  prior  to
{ calling this request.
{
{       STP$SEARCH_MEL_FOR_VOL (MEMBER_VOL, AST_INDEX, MEMBER_ENTRY,
{         MEL_INDEX, VOLUME_FOUND)
{
{ MEMBER_VOL: (input) This parameter specifies the name of the  member  volume
{       to search for.
{
{ AST_INDEX:  (input) This parameter specifies the set for which the member is
{       to be found.  This is assumed valid.
{
{ MEMBER_ENTRY: (output) This parameter returns the entry in the member  entry
{       list  of  the  active set table.  This is only valid if volume_found =
{       true.
{
{ MEL_INDEX: (output) This parameter returns the index into the  member  entry
{       list  of  the  active  set  table, for the found volume.  This is only
{       valid if volume_found = true.
{
{ VOLUME_FOUND: (output) This parameter returns whether the member volume  was
{       found.
{
