Bug 514190 - setup-ds-admin.pl --debug does not log to file
    
    https://bugzilla.redhat.com/show_bug.cgi?id=514190
    Resolves: bug 514190
    Bug Description: setup-ds-admin.pl --debug does not log to file
    Reviewed by: nhosoi (Thanks!)
    Branch: 389-ds-base-1.2.8
    Fix Description: Added a logDebug() method to the SetupLog class, used
    for logging debug messages.  At startup time, the log used by the
    Setup or Migration object registers its log with the DSUtil code.  When
    the DSUtil::debug() method is called, it will also call the logDebug()
    method of the DSUtil::log object if specified.
    Platforms tested: RHEL6 x86_64
    Flag Day: no
    Doc impact: no
    (cherry picked from commit 6580a9942e945699819570596977b60cd82d65ec)