Revision 276

Move procedure read_serre from module read_serre_m to module
dynetat0_m, to avoid side effet on variables of module dynetat0_m.

Create procedure set_unit_nml to avoid side effect on variable of
module unit_nml_m.

Downgrade pctsrf from variable of module etat0_m to argument of etat0
and limit to avoid side effect on pctsrf.

Move variable zmasq from module dimphy to module phyetat0_m to avoid
side effect on zmasq.