ImportOGR and automatic projection detection

I have now modified the ImportOGR step of scenProc. For the projection you can now specify a value of AUTODETECT to tell scenProc to try to detect the projection used by itself. This works for most vector data formats that GDAL/OGR supports, as long as the projection data is specified correctly in the vector data. For example for shapefiles there is often a PRJ file that specifies the projection of the data.

If the automatic detection fails you can still specify it manually like it was done before. And the NOREPROJ value to specify the projection is already WGS84 geodetic coordinates is also still supported of course.

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