d0e1661 If stderr is not a tty log to syslog so the helpers can log

Authored and Committed by rcritten a year ago
    If stderr is not a tty log to syslog so the helpers can log
    
    All the helpers were configured to use the log method cm_log_stderr
    which when exececuted as a helper from the certmonger daemon would
    log nowhere.
    
    If stderr is detected as a tty (e.g. the helper is run directly on
    the cli) then logging will go there. Otherwise it will log to
    syslog (honoring the log level).
    
        
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