Exclude fluctuating counters

Closes #66 (closed) . Ignore logfile counters that are known to fluctuate.

DaVinciExamples/tests/qmtest/tupling.qms/test_davinci_configFuntuple.qmt

@@ -26,8 +26,8 @@
   <argument name="reference"><text>../refs/test_davinci_configFuntuple.ref</text></argument>
   <argument name="error_reference"><text>../refs/empty.ref</text></argument>
   <argument name="validator"><text>
-from DaVinciTests.QMTest.DaVinciExclusions import preprocessor
-validateWithReference(preproc = preprocessor)
+from DaVinciTests.QMTest.DaVinciExclusions import preprocessor, counter_preprocessor
+validateWithReference(preproc = preprocessor, counter_preproc = counter_preprocessor)
 countErrorLines({"FATAL":0, "ERROR":0})
   </text></argument>
 </extension>