Philippe 06/07/2021: secure SURFEX_DEALLO_LIST (possibility to call it even if YSURF_LIST not allocated)

Philippe 05/07/2021: budgets: write_profilern: full reorganisation to store point values correctly (not in vertical profiles)

Quentin 29/06/2021: bugfix SURFEX avoid abort for interpolation of a field which is fully XUNDEF at spawning with ECOCLIMAP-SG. With ECOSG, a field can be fully XUNDEF after PGD.

Philippe 28/06/2021: small optimisation in the call to ice4_rainfr_vert (create arrays with zeros instead of multiplications by zero)

Philippe 28/06/2021: netCDF: use correct integer datatypes for netCDF integers + respect Doctor norm

Philippe 28/06/2021: IO: better management of pre-5.5 files (default values for missing fields instead of crash)

Philippe 28/06/2021: allocate to zero-size arrays in ini_model_n to prevent use of unallocated arrays later
+ allocate some of them to non zero-size only if necessary