Beat Küng ca24c8e2b6 printload: add a column for the number of used file descriptors
And the maximum number of configured file descriptors.

Note that this is per group, not per thread, so that e.g. logger and
log_writer_file show the same number.
2017-08-23 08:11:44 +02:00
..
2017-02-01 22:15:50 -05:00
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