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The OESystem::OEStopWatch class provides timer functionality. An
application may contain multiple stopwatches, by declaring multiple
instances OEStopWatch. The OEStopWatch::Start() method is
used to start the timer, and the OEStopWatch::Elapsed() method
returns the elapsed time as a floating point value.
One quirk of the OEStopWatch class is that to work around operating
system limitations, values below 2147 seconds (about 35 minutes) are
based on a high-resolution CPU-usage timer (using ``clock(3)'') and
after that report Wall-clock times accurate to about a second (using
``time(3)'').
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