h4h5tools

To prevent nc_close, which is a part of netCDF4, from causing deadly segmentation fault

nc_close() causes segmentation fault while freeing a heap object. When I attached a debugger, it seemed that object is related to "coordinates" attribute. The dataspace of "coordinates" was changed from simple to scalar. After changing this type, nc_close() does not cause crash.

One thing I forgot to mention in the previous commit is that the actual EOS2 files are not tested anymore because the expected results are too big to be distributed.