-Small change in the dynamics/physics interface organization:
externalize (from iniphysiq) operations wich initialize settings
common to all physics packages (e.g. global grid definitions;
in practice initializations for routines either in phy_common
or in dynphy_lonlat) in inigeomphy (located in dynphy_lonlat).
iniphysiq should only initialize settings in the corresponding
physics package (e.g. phylmd for dynphy_lonlat/phylmd/iniphysiq).
Bug fix in phydev/iophy: is_south_pole_dyn replaces