(cherry picked from commit a7a23457)

Necessary to ensure availability of chemistry scalar variables names in ini_nsv (for further developments)

(cherry picked from commit 59877f0b)

Soline Bielli : 01/03/2019: Sea salt update: the significant sea wave height now influences salt emission.
The sea salt is either set to a default value of 2meters or read in ECMWF Grib file (if the variable exists).
Now 5 modes are available (3 before) and the order in output is changed.
The large-scale sea wave height from ECMWF grib is 2D. HALO2 update of the ls variable in modeln is not yet adapted to 2D field (it is switch off in this version for this variable).

Philippe 22/03/2018: IO: use CFORMAT field of TFILEDATA instead of relying on LIOCDF4, LLFIOUT and LLFIREAD
This prevents some problems when mixing LFI and netCDF files (ie in cdf2lfi)
+ cleaning use of modd_io_ll for LIOCDF4, LLFIOUT and LLFIREAD (and others)

+ use them

* NLFINPRAR in TFILEDATA type is now of KIND=LFI_INT
* use TPFILE as argument instead of its fields for FMOPEN_ll and FMCLOSE_ll

+ FMOPEN_ll/FMCLOSE_ll are now private
+ cleaning of comments

* use new file structure for CLUOUT and CLUOUT0 (->TLUOUT and TLUOUT0)
* use PRINT_MSG with NVERB_FATAL to replace (some) "callabortstop"
* set TFILE_OUTPUTLISTING  to select file for outputs of PRINT_MSG
* removed some unused code

* added OUTPUTLISTING CTYPE for files (IO_FILE_OPEN_ll and IO_FILE_ADD2LIST)
* added NLU variable in TFILEDATA datatype
* removed HFIPRI argument in IO_FILE_OPEN_ll, FMOPEN_ll, IO_FILE_CLOSE_ll
  and FMCLOS_ll subroutines
* removed FM_ERR subroutine
* KRESP return code is now optional for IO_FILE_OPEN_ll, FMOPEN_ll,
  IO_FILE_CLOSE_ll and FMCLOS_ll subroutines

+ removed unused variables

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

* added IO_FILE_ADD2LIST subroutine and use it
* IO_FILE_OPEN now requires the file to be in the file list
* IO_FILE_FIND_BYNAME: added optional argument useful when checking
  that a file does not yet exist
  + bug correction when filelist is empty
* added IO_FILE_PRINT_LIST subroutine (only for debugging)
* added TPTR2FILE structure to allow construction of arrays of
  pointers to files
* use IO_READ_FIELD for some 3D float arrays (in read_field.f90)
* OPEN_ll: added UPDATE_METADATA internal subroutines to treat file metadata

+ write the header for PREP_REAL_CASE and SPAWNING

* 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

Some files with it are still available as they could be useful later.