Author: amsharma <amsharma@redhat.com> Date: Thu Aug 6 14:47:01 2015 +0530
    
            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 : Added test cases
    
            Reviewed by: Simon(Thanks!) and Mark(Thanks!)
    
    Signed-off-by: Mark Reynolds <mreynolds@redhat.com>
    (cherry picked from commit 71987edf40476373c4051aa50b429eda3679da49)