Description of proposed changes

• utils.writefile.layout_hdf5(): support using binary file as structure reference to create empty HDF5 files, using the metadata and slice(s) info.

• simplify the code with vprint()

Reminders

• Fix geocode.py on swbdLat_*.wbd fails #681
• Pass Codacy code review (green)
• Pass Circle CI / local test (green)
• Make sure that your code follows our style. Use the other functions/files as a basis.
• If adding new functionality, add a detailed description to the documentation and/or an example.