Philippe 02/10/2017: IO: split NAM_OUTPUT in NAM_BACKUP and NAM_OUTPUT

MY_RUN/KTEST/007_16janvier/008_run2/README.namelist

MY_RUN/KTEST/007_16janvier/008_run2/run_mesonh_xyz

MY_RUN/KTEST/007_16janvier/009_diag/DIAG1.nam1

MY_RUN/KTEST/007_16janvier/009_diag/DIAG1.nam2

...TEST/007_16janvier_scandollar/008_run2/run_mesonh_xyz.ihm

MY_RUN/KTEST/009_ICARTT/003_mesonh/EXSEG1.nam.src

MY_RUN/KTEST/011_KW78CHEM/002_mesonh/EXSEG1.nam

MY_RUN/KTEST/012_dust/003_run/EXSEG1.nam

MY_RUN/KTEST/012_dust/004_restart/EXSEG1.nam

MY_RUN/KTEST/014_LIMA/002_mesonh/EXSEG1.nam

src/LIB/SURCOUCHE/src/mode_io_manage_struct.f90

src/MNH/default_desfmn.f90

src/MNH/modd_bakout.f90

src/MNH/modeln.f90

src/MNH/modn_backup.f90

src/MNH/modn_output.f90

src/MNH/read_desfmn.f90

src/MNH/read_exsegn.f90

src/MNH/write_desfmn.f90