replace allocatable -> pointer,contiguous ;
allocate -> MNH_ALLOCATE_ZT*D ;
Some ARRAY SYNTAXE , with implicit copy inrelevenant -> DO CONCURRENT

Juan 19/06/2020:mode_prandtl.f90 , Bug (ifort identifaction) replace routine-name->array-name : M3_WTH_W2TH(:,:,:) -> PM3_WTH_W2TH(:,:,:)

Juan 19/06/2020: add fake OPENACC module to compile with -DMNH_OPENACC -D_FAKEOPENACC for compiler without OpenACC

Juan 2/03/2020: compare_with_pgd_domain.f90, strange bug with pgi/20.04 <-> corrupted size vs. prev_size , pgf901 TERMINATED by signal 6, add 1 write to avoid it ?!

# Conflicts:
#	src/MNH/gradient_m.f90
#	src/MNH/gradient_u.f90
#	src/MNH/gradient_w.f90
#	src/MNH/prandtl.f90
#	src/MNH/turb.f90
#	src/MNH/turb_hor_dyn_corr.f90
#	src/MNH/turb_hor_sv_corr.f90
#	src/MNH/turb_hor_thermo_corr.f90
#	src/MNH/turb_hor_uv.f90
#	src/MNH/turb_hor_uw.f90
#	src/MNH/turb_hor_vw.f90
#	src/MNH/turb_ver_dyn_flux.f90
#	src/MNH/turb_ver_thermo_flux.f90

# Conflicts:
#	src/MNH/mode_prandtl.f90
#	src/MNH/turb_ver_thermo_corr.f90
#	src/MNH/turb_ver_thermo_flux.f90

# Conflicts:
#	src/MNH/advection_uvw.f90
#	src/MNH/advection_uvw_cen.f90
#	src/MNH/advecuvw_4th.f90
#	src/MNH/advecuvw_weno_k.f90
#	src/MNH/dyn_sources.f90
#	src/MNH/gradient_m.f90
#	src/MNH/gradient_u.f90
#	src/MNH/gradient_v.f90
#	src/MNH/gradient_w.f90
#	src/MNH/gravity.f90
#	src/MNH/mode_prandtl.f90
#	src/MNH/ppm.f90
#	src/MNH/prandtl.f90
#	src/MNH/resolved_cloud.f90
#	src/MNH/rmc01.f90
#	src/MNH/shuman.f90
#	src/MNH/tke_eps_sources.f90
#	src/MNH/tridiag_thermo.f90
#	src/MNH/tridiag_w.f90
#	src/MNH/turb.f90
#	src/MNH/turb_hor.f90
#	src/MNH/turb_hor_dyn_corr.f90
#	src/MNH/turb_hor_splt.f90
#	src/MNH/turb_hor_sv_corr.f90
#	src/MNH/turb_hor_thermo_corr.f90
#	src/MNH/turb_hor_thermo_flux.f90
#	src/MNH/turb_hor_tke.f90
#	src/MNH/turb_hor_uw.f90
#	src/MNH/turb_hor_vw.f90
#	src/MNH/turb_ver_dyn_flux.f90
#	src/MNH/turb_ver_sv_corr.f90
#	src/MNH/turb_ver_sv_flux.f90
#	src/MNH/turb_ver_thermo_corr.f90
#	src/MNH/turb_ver_thermo_flux.f90

Philippe 18/12/2019: OpenACC: ground_param_n: use allocatables for local variables + improve data directive

Philippe 18/12/2019: remove unnecessary dummy argument for size + remove scalar intermediate variables

The only remaining declare are in the modd_* declarations

Philippe 25/11/2019: OpenACC: bugfix: rename ZWT_ACT_NUC -> XWT_ACT_NUC in acc directives (forgotten in previous merge)

(cherry picked from commit ad10ea2e)

(cherry picked from commit 8a27344b)

Philippe 21/11/2019: give dimensions (:,...) when doing computations on arrays (better performance with PGI + remove some strange compiler messages)

Philippe 21/11/2019: automatic arrays -> allocatable (to work around PGI OpenACC bug) for turbulence+some others

Philippe 23/10/2019: OpenACC: rename _OPENACC key to MNH_OPENACC (_OPENACC is a standard OpenACC macro)

Christine 11/10/2019: minor correction, unallocation of allocated radiation variable with CRAD=NONE for profilers and stations

Philippe 10/10/2019: add contiguous attribute for offloaded arrays (required by gfortran for OpenACC support)

Philippe 10/10/2019: OpenACC: replace 'declare copyin' by 'data copyin' for use-associated variables (to be standard compliant)

Philippe 03/10/2019: OpenACC: move 'acc routine' directive after 'implicit none' (required by gfortran 9.2)

Philippe 03/10/2019: OpenACC: replace 'declare present' by 'data present' directives for assumed-size dummy arrays (to be standard compliant)