[Dev] Implemented the check on envelope ID.
 In principle, it works. However, that new rule (envelope ID != 0
 => match percentage = 0.10%) is superceded by the matching with
 the IATA/ICAO code. For instance, when several POR exist fot the
 same IATA code, (which is usually the case when some are no longer
 valid), the first one is taken, usually the one with the lowest
 Geonames ID.
 So, more work is needed on the IATA/ICAO matching. That process
 may be handled like the page rank and the envelope ID, i.e.,
 directly at the document level, so that it does not supercede
 the other rules.
[Data] Integrated the latest updates from ORI (RFD and Geonames).
[Dev] Fixed the CMakeLists.txt file by escaping quotes (").