Juan 8/12/2016: add management of LEN_HREC in MNH & SURFEX

conf/profile_mesonh.ihm

src/MNH/mode_RBK90_Integrator.f90

src/MNH/modeln.f90

src/MNH/read_all_data_grib_case.f90

src/MNH/write_surf_mnh.f90

src/Makefile.MESONH.mk

src/SURFEX/alloc_diag_surf_atmn.F90

src/SURFEX/build_pronoslistn.F90

src/SURFEX/ch_init_emissionn.F90

src/SURFEX/default_diag_surf_atm.F90

src/SURFEX/diag_isba_initn.F90

src/SURFEX/diag_misc_teb_initn.F90

src/SURFEX/diag_seaflux_initn.F90

src/SURFEX/diag_teb_garden_initn.F90

src/SURFEX/diag_teb_greenroof_initn.F90

src/SURFEX/diag_teb_initn.F90

src/SURFEX/diag_watflux_initn.F90

src/SURFEX/get_teb_depths.F90

src/SURFEX/init_teb_veg_optionsn.F90

src/SURFEX/io_buffn.F90