(cherry picked from commit 4795ceda)

Philippe 20/02/2023: IO: add suffix to logicals written from SURFEX (to prevent name collisions with MesoNH variables)

+ more efficient use of grid variables

Philippe 17/05/2018: IO: revert behavior in PREPARE_METADATA_WRITE_SURF: use provided values if conflict with TFIELDLIST

* IO_READ_CHECK_FIELD_LFI: reduce error level to warning if unexpected grid for scalar variable
* IO_FILE_OPEN_ll: missing NDIMS for MASDEV
* INI_MODEL_n: associate TINIFILEPGD to TFILE_DUMMY if necessary
* WRITE_BUDGET: set NGRID=1 for 6D MASK variables
* WRITE_DIACHRO: reverted name of field to old behavior (kept improved comment) (patch was lost in previous merge)
* PREPARE_METADATA_WRITE_SURF: keep TPFIELD fieldvalues when in conflict with passed values

Philippe 05/04/2018: IO: set all (except if in TFIELDLIST) SURFEX variables to be not time dependent (temporary?)

Philippe 18/08/2017: IO: use IO_READ_FIELD for several fields, IO_FILE_OPEN and IO_FILE_CLOSE for several files

* use new structures of files and fields for PREP_SURFEX
* bug correction when writing empty DAD_NAME
* adapt WRITE_SURFT0_MNH to new structures

* several errors and problems corrected in mode_field.f90
* moved INI_FIELD_LIST call earlier in init_mnh.f90
* IO now works for: DIAG, PREP_IDEAL_CASE, PREP_NEST_PGD, PREP_PGD,
  PREP_REAL_CASE and SPAWNING

                         and PRINT_MSG
                         Some calls are not yet (fully) ported