+ use them

* FD_ll removed several fields not used anymore
* removed GETFD_COMM function
* bug corrections: use NLFIFLU instead of NLU
* bug correction in CLOSE_ll: .NOT. GPARALLELIO => GPARALLELIO

+ treated correctly NOPEN_CURRENT and NCLOSE fields for Z-splitted files

+ simplified IO_FILE_READ/WRITE_NC4_xy calls
+ added IO_FILE_WRITE_CHECK subroutine

+ creation of CHEMINPUT, CHEMTAB, GPS, METEO and TXT CTYPES for TFILEDATA

Philippe 13/11/2017: IO: added KZFILE option for IO_WRITE_FIELD_LFI_X2 (necessary for Z-splitted files)

Philippe 10/11/2017: IO: replace OPEN_ll/CLOSE_ll by IO_FILE_OPEN/CLOSE_ll for namelist and other files
+ removed some FMLOOK_ll

 for IO_FILE_OPEN/CLOSE_ll and IO_FILE_ADD2LIST
+ manage .des files in IO_FILE_OPEN/CLOSE_ll

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

(cherry picked from commit 6c172b3f)

(cherry picked from commit 4691b211)

Philippe 31/10/2017: IO: pass TPFILE to IO_WRITE_FIELD_LFI_xxx calls and use it to retrieve the logical unit + correct a bug in the integer kind of the LU

Philippe 30/10/2017: IO: DIAG: minor bug correction: renamed field PABST in PRES (when written in hPa)

* replace FMREAD/FMWRIT by IO_READ/WRITE_FIELD
* modify SET_CONFIO_ll call in mnh2lpdm.f90
* use TZPGDFILE for read_chem_data_netcdf_case.f90
* declare TZATMFILE when necessary