{
{  dup$locate_symbol_for_number searches the symbol table for the
{  specified symbol number.
{
{  DUP$LOCATE_SYMBOL_FOR_NUMBER (SYMBOL_ADDRESS, SYMBOL_NUMBER,
{      SYMBOL_ENTRY, STATUS)
{
{  SYMBOL_ADDRESS : (input)   is a pointer to the debug symbol table.
{
{  SYMBOL_NUMBER : (input)    is the symbol number to locate in the
{                             debug symbol table.
{
{  SYMBOL_ENTRY : (output)    is the symbol table entry corresponding
{                             to the specified symbol number.
{
{  STATUS : (output)          is the status of the request. Possible value(s):
{                               due$no_symbol_table_in_module
{                               due$symbol_number_not_found
{
