Merge pull request #64 from SkipAir/master

Further addition of airspace in France and modifications in Belgium.
* To stay consistent with the other files, it's better to use 'NONE'
  instead of 'None' if an airspace needn't be shown on any maps.
* To stay consistent with the other files, it is better to use
  'SEE NOTAM' instead of just 'NOTAM'.
* Removed PRODUCT_VERSION from the filename, as I think that the
  generation date and timestamp are enough here.
* Added directory with info concerning the OpenAir files from
  the FFVV (France).
* Removed Wim's update date.
* Added Belgocontrol website in Source information.
* Added more links concerning Garmin's IMG format;
* NOTAM zones are now in blue in the KML output.
* Added link of Spanish AIP.
* Added a note concerning airspaces with multiple classes and how they must
  be specified in the OpenAir file.
* Fixed bug in AT-record parsing.
* Added 'TMZ' (Transponder Mandatory Zone) as airspace class, which is an
  extension appearing in the AIP for the Netherlands.
* Added screenshots from Wim's Garmin GPSMAP 62s (firmware 3.71).
* Added two tools for working with Garmin IMG files and MapSource.
* The 'Transparent' option is now set to 'Y'.
* Removal of the 'TMA:', 'CTA:' and 'Vectoring Area:' prefixes in the Polish output.
* Removed space between number and unit in altitude specification to save space.
* TYP files now have the ID instead of the name of the map, because
  it is recommended for TYP files to have a name that is only 8+3
  characters long and we cannot guarantee names of maps to be smaller
  than 8 characters.
* Map Set Name and CD Set Name are now unique for each map.
* Added file where we can specify our favourite XC routes.
* Added Levant - Kortrijk :-)
* Added Paul's route from Grauves to Beauraing.