Counters for the Number of Documents and Errors Are Stored in a Long

As to Denodo 5.5, the counters for the number of extracted/exported/cached tuples and errors were stored in an Integer data type. Starting with Denodo 6.0, those counters are stored in a Long one. This affects the methods from AbstractExtractionJobReport (and its subclasses) and JobData (and its subclasses).