ibrcommon: Initialize start and end of TimeMeasurement to the same value
daemon: Remove EventDebugger

This component is no longer necessary since the EventSwitch will log each event
instead.
daemon: Add profiling option to EventSwitch

If profiling is enabled, the time of each raised event is measured and logged.
If the raise call lasts longer than 6 seconds, the daemon will exit with an SIGABRT.