XPlane: accept V1000 APT files (note that this is partial support. A new record type has been added for Taxi and this is not supported by this commit)

git-svn-id: https://svn.osgeo.org/gdal/trunk@27118 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_travis_macosx