+ move IOFREEFLU and IONEWFLU to mode_io_file_lfi.f90
+ move management of NNCID and NLFIFLU to the nc4 and lfi subroutines

Philippe 14/12/2018: restructuration of LFI calls in several modules + other changes and improvements

Philippe 13/12/2018: split mode_netcdf module into multiple modules + add new subroutines to check if a file has been closed correctly
This is done:
*to reduce circular dependencies problems
*to have cleaner code
*to compile faster
*to detect problems with not correctly closed netCDF files

Juan 10/12/2018 : // Correction , mpi_bcast CG & CG_POS parameter & initialize INBLIGHT on all proc for filling/saving AREA* arrays

Philippe 05/12/2018: cdf2cdf: better support for older files (<5.4.0) and special treatment for EMIS

Philippe 27/11/2018: LFI2CDF: correct problems when reading files generated with older versions (tested on 5.3.1 files)

Benoit Vie 15/11/2018: bug: SMAX variable output was not written on the entire domain (it was written only in the proc domain) when multiproc used

(cherry picked from commit 0cac8488)

(cherry picked from commit bd503275)

Quentin 6/11/2018: coupling_naturen.F90, correction: wrong time variable in call coupling_tsz0  (PTIMEC --> PTIME). PTIME is the time in seconds since UTC midnight necessary for applying surface temperature or sensible/heat flux forcings at the right time (especially if MNH uses restart)

Quentin 30/10/2018 :lima_adjust.f90, activate MEAN_CF diag in LIMA if no radiation scheme used (otherwise, in LES diag output, MEAN_CF___PROC1 = 0 even if clouds are presents)

Rui Salgado : 11/10/2018: prep_flake_grib.F90 : change the INMODEL variable as in prep_watflux_grib.F90

Quentin 01/10/2018 : set_forcing.f90 , bug for NKWH>2 => move allocate(ZWHITE) before do loop on vertical levels

Juan 18/10/2018:writesurf_oceann.F90, hange ZWORK,from automatic(error if O%XSEAT not initialized) to allocatable

Juan 18/10/2018:write_diag_misc_isban.F90, change ZMAX,from automatic(error if DM%XSWI not initialized) to allocatable

Philippe 07/09/2018: SURFEX: rename gamma -> gamma_surf to prevent problems with similar functions in MesoNH

Juan 21/08/2018: rain_ice.f90,for real*4 , bis => limit exp() in RAIN_ICE_SLOW with XMNH_HUGE_12_LOG