Ticket 47910 - allow logconv.pl -S/-E switches to work even when timestamps not present in access log
    
    Bug Description:  logconv does a normal string comparison to determine the
                      start and end times.  If these exact times do not exist
                      in the logs then processing never takes place.
    
    Fix Description:  Convert the start and end times to seconds, then convert
                      the access log line time to seconds for comparision.
    
    https://fedorahosted.org/389/ticket/47910
    
    Reviewed by: rmeggins(Thanks!)