Addition of a script "inipem_orbit.sh" in the deftank to modify the orbital parameters of a file "startfi.nc" according to the date set in the file "run_PEM.def" and data found in "obl_ecc_lsp.asc";
Flow of glaciers is now computed only when there are slopes;
Reversion to the name "diagpem.nc" for the PEM outputs (as decided) which was modified in r3171;