def _updateBookeepingVars(self, learn):
self._iterationNum += <NUM_LIT:1><EOL>if learn:<EOL><INDENT>self._iterationLearnNum += <NUM_LIT:1><EOL><DEDENT>
Updates counter instance variables each round.

Parameters:
----------------------------
:param learn:   a boolean value indicating whether learning should be
                performed. Learning entails updating the  permanence
                values of the synapses, and hence modifying the 'state'
                of the model. setting learning to 'off' might be useful
                for indicating separate training vs. testing sets.