* HDF5 1.8.9 -> 1.8.20
* netCDF 4.1.3 -> 4.5.0
* netCDF-fortran 4.1.3 -> 4.4.4
* added libaec 0.3.2 (equivalent to szlib but without licence problems)

+ 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)