{    The purpose of this request is to get the information from a global log
{ control descriptor that is needed to read the global log.
{
{       LGP$GET_GLOBAL_LOG_READ_INFO (GLOBAL_LOG, ENTRY_COUNT_FROM_END_OF_LOG,
{             LOG_CYCLE, LOG_DATA, ENDING_OFFSET, STATUS)
{
{ GLOBAL_LOG: (input)  Specifies which log.
{
{ ENTRY_COUNT_FROM_END_OF_LOG: (input)  Specifies the number of log entries to
{       be backspaced over.  If zero is specified log data will be positioned
{       at the current end of the log.
{
{ LOG_CYCLE: (output)  Variable to receive the current log cycle.
{
{ LOG_DATA: (output)  Variable to recieve a copy of the log data sequence
{       pointer (positioned as specified by the ENTRY_COUNT_FROM_END_OF_LOG
{       parameter).
{
{ ENDING_OFFSET: (output)  Variable to receive the current ending offset for
{       the log.
{
{ STATUS: (output) Variable to receive the completion status.
{      CONDITION: lge$log_not_available
