{
{   The purpose of this request is to get a pointer to the XCB of the task
{ specified by a global task id (GTID). If the GTID is invalid, the system is halted
{ with an 'taskid error'. If the taskid is valid but the task is swapped out,
{ a NIL pointer is returned.  A pointer to the initiated job list entry is also
{ returned.
{
{        tmp$get_xcb_p (taskid, xcb_p, ijle_p);
{
{ TASKID: (input) This parameter specifies the GTID of the task to be located.
{
{ XCB_P: (output) This parameter contains a pointer to the XCB of the specified
{         task. If the task is swapped out, a NIL pointer is returned.
{
{ IJLE_P: (output) This parameter contains a pointer to the initiated job list
{         entry of the job.
