{
{    The purpose of this function is to compute the selection priority of a job
{ in the input queue.
{
{       JMP$JOB_SELECTION_PRIORITY ( CURRENT_TIME, KJL_INDEX, JOB_CLASS);
{
{ CURRENT_TIME: (input)  This is the time in microseconds at which the priority
{       is to be computed.
{
{ KJL_INDEX: (input)  This is the kjl index of the job in the input queue whose
{       priority is to be computed.
{
{ JOB_CLASS: (input)  This is the job class of the job in the input queue.
{
