Melchior FRANZ:

Melchior FRANZ:

The following patches to SimGear & FlightGear ...

- create an FGMetar abstraction layer, whose purpose is:
  * provide defaults for unset values
  * interpolate/randomize data (GREATER_THAN)
  * derive additional values (time, age, snow cover)
  * consider minimum identifier (CAVOK, mil. color codes)
- add rain/hail/snow/snowcover support on the METAR side
- add max age of METAR data handling (currently set to
- add support for an external METAR cache proxy server
- add CAVOK handling
- set missing year/month in regular METAR messages
- fix a small bug in metar.cxx (wrong return value)