Philippe 03/11/2016: OpenACC: merged LES_MEAN_SUBGRID and LES_MEAN_SUBGRID_DEVICE subroutines (all calls to it are now done in OpenACC regions)

Philippe 27/10/2016: add BITREP library to allow the use of bit-reproducible mathematical operators on CPU and GPU

Philippe 17/10/2016: OpenACC: added OpenACC directives for tke_eps_sources.f90 and tridiag_tke.f90 + continued work for turb.f90

Philippe 26/09/2016: OpenACC: added aborts for parts not yet implemented, removed warning for parts to be tested

Philippe + Maxime MOGE 22/09/2016: imported + adapted tm06_h.f90, tridiag_thermo.f90 and turb_ver_thermo_flux.f90 from Maxime's work

Philippe 23/09/2016: small bug corrections to allow compilation without errors if not using _OPENACC

Philippe + Maxime MOGE 22/09/2016: imported + adapted MNH/turb_hor_sv_flux.f90, MNH/turb_hor_thermo_corr.f90, MNH/turb_hor_thermo_flux.f90 from Maxime's work

Philippe + Maxime MOGE 22/09/2016: imported + adapted turb_hor_dyn_corr.f90 and tridiag_w.f90 from Maxime's work

Philippe + Maxime MOGE 20/09/2016: imported + adapted turb_hor_uw.f90 and turb_hor_vw.f90 from Maxime's work

 Philippe + Maxime MOGE 20/09/2016: imported + adapted les_mean_1proc.f90, les_mean_subgrid.f90, les_ver_int.f90 and ver_interp_lin.f90 from Maxime's work (NOT YET TESTED)

Philippe + Maxime MOGE 13/09/2016: imported + adapted gradient_v.f90 and gradient_w.f90 from Maxime's work

Juan 9/08/2016: For ppc64le pb , in gribapi/net tar.gz replace config.guess & config.sub with new version

Juan 9/08/2016: for Pgi conf problem , add CPP=ccp flags in Makefile & Rules.LXpgi.mk via CDF_CONF/GRIBAPI_CONF

* added updates between a call to GET_HALO_D. This is necessary to get correct results with OpenACC in parallel (reason not clear, maybe a bug in PGI 16.4)
* bug correction in get_halo_d (missing case if HDIR=S0_X or S0_Y)
* minor changes

Philippe 29/07/2016: force disabling of vectorisation for the loop to compute the sum in SUM_1DFIELD_ll (necessary to get bit reproductibility with PGI 16.4)

* added option to CHECK_MPPDB3D: MPPDB_CHECK_LB_CORNERS to check or not the corners
* check that the message is the same on all processes to detect some mistakes
* some little cleaning