A new ODB flag has been introduced. When the logger is configured for automatic
stop and restart (/Logger/Auto restart = y), the restart delay was hard-wired
to 20 sec., which might be too long or short for some experiments. Therefore a
new parameter "/Logger/Auto restart delay" has been introduced which can be
used to accommodate different delays. A non-zero delay is necessary for
experiments where some lengthy activities occur during the stop of a run, like
an analyzer writing many histograms to disk.