Merge branch 'MNH-52X-BUG2' into MNH-53X-BU2

Conflicts:
	MY_RUN/KTEST/002_3Drelief/005_ncl/run_ncl
	src/MNH/advection_metsv.f90
	src/MNH/ground_paramn.f90
	src/MNH/ini_lb.f90
	src/MNH/ini_modeln.f90
	src/MNH/modeln.f90
	src/MNH/ppm_met.f90
	src/MNH/ppm_scalar.f90
	src/MNH/read_exsegn.f90
	src/MNH/read_field.f90
	src/MNH/resolved_cloud.f90
	src/MNH/spawn_model2.f90
	src/MNH/write_aircraft_balloon.f90
	src/Makefile
	src/SURFEX/ch_init_depconst.F90
	src/SURFEX/ch_init_emissionn.F90
	src/SURFEX/ch_init_snapn.F90
	src/SURFEX/init_surf_atmn.F90
	src/SURFEX/modd_ch_surfn.F90
	src/SURFEX/pgd_surf_atm.F90
	src/SURFEX/write_surf_atmn.F90
	src/SURFEX/writesurf_snapn.F90
	src/SURFEX/zoom_pgd_surf_atm.F90
	src/configure