Ticket #613 - ldclt: add timestamp, interval, nozeropad, other improvements
    
    https://fedorahosted.org/389/ticket/613
    Reviewed by: nhosoi (Thanks!)
    Branch: master
    Fix Description: Was not wrapping incremental value properly.  Use better
    modulo based algorithm and use a common function for this algorithm.
    Platforms tested: RHEL6 x86_64
    Flag Day: no
    Doc impact: no