Alexis Lee 8fde280b86 Reload log_config_append config on SIGHUP
On SIGHUP the mutate_hook will be called. Call fileConfig to
reconfigure logging if log-config-append changes or the timestamp of
the file it points to changes.

Implements: bp mutable-logging
Change-Id: I8ca8e6b4e9218f3a2edaf9ecf53653d829bc0c12
2016-07-06 17:46:46 +01:00
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