Philippe 15/03/2019: use MNHINT_MPI and MNHREAL_MPI from modd_precision, remove MNH_MPI_DOUBLE_PRECISION and MNH_MPI_RANK_KIND keywords

Philippe 22/02/2019: add kind parameter for CMPLX intrinsics (if not it default to single precision)

Philippe 22/02/2019: use MOD intrinsics with same kind for all arguments (to respect Fortran standard)

Philippe 21/02/2019: bugfix: intent of read fields: OUT->INOUT to keep initial value if not found in file

Quentin 19/02/2019: adapt the chemistry-namelist for ICARTT KTEST to the new BASIC.f90 (commit of 14/02/2019) + add MNH_MEGAN in profile_mesonh.ihm

Joris P. and Pierre T. 14/02/2019: corrections for the use of MEGAN scheme (always the night in mode_megan) + desactivation of leaf temperature correction with sun/shade + add missing default values

Benoit V. 14/02/2019: LIMA minor correction (budget and turn off heat exchange transport by droplets)

Philippe 13/02/2019: remove PPABSM and PTSTEP dummy arguments of READ_FIELD (bugfix: PPABSM was intent(OUT))

Philippe 12/02/2019: bugfix: variables were not always initialized + ensure a variable is always positive