message: added comments for helper::Log
diff: @@ -23,8 +23,20 @@ enum LogMode : char
  OUTPUT = 'o'
  };
  +/**
  + * Print outputs, warnings, errors, and exceptions
  + * @param component: Engine, Transport, Operator, etc.
  + * @param source: class name of component
  + * @param activity: function name where this is called
  + * @param message: text message
  + * @param logRank: only print if(logRank==commRank)
  + * @param commRank: current MPI rank
  + * @param priority: only print if(priority<=verbosity)
  + * @param verbosity: engine parameter for engine wide verbosity level
  + * @param mode: OUTPUT, WARNING, ERROR, or EXCEPTION
  + */
  void Log(const std::string &component, const std::string &source,
  - const std::string &operation, const std::string &message,
  + const std::string &activity, const std::string &message,
  const int logRank, const int commRank, const int priority,
  const int verbosity, const LogMode mode);
  