Juan 13/10/2016:get_pgd_files , add get_pgd_files

MY_RUN/KTEST/013_Iroise_ideal_case_coupling/1_INPUT_MNH/get_pgd_files

+#
+#     Modif
+#     J.Escobar 11/04/2014 get PGD files from 'dir_open' directory ( without psswd )
+#     J.Escobar 25/04/2013 get LICENCE files
+#
+PREP_PGD_FILES=${PREP_PGD_FILES:-"$HOME/PREP_PGD_FILES_WWW"} ; export PREP_PGD_FILES
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "!!!!            WARNING                  !!!!"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo 
+echo you need 3GO to download this files in
+echo 
+echo PREP_PGD_FILES=$PREP_PGD_FILES  
+echo 
+echo if OK press ENTER  else CTRL-C
+read RIEN
+set -x
+mkdir -p $PREP_PGD_FILES
+cd $PREP_PGD_FILES
+PGD_URL="http://mesonh.aero.obs-mip.fr/mesonh/dir_open/dir_PGDFILES"
+WGET="wget"
+export PGD_URL
+for file in LICENSE_ECOCLIMAP.txt LICENSE_soil_data.txt \
+            gtopo30.dir gtopo30.hdr \
+            SAND_HWSD_MOY.hdr SAND_HWSD_MOY.dir CLAY_HWSD_MOY.hdr CLAY_HWSD_MOY.dir \
+            ECOCLIMAP_v2.0.hdr ECOCLIMAP_v2.0.dir etopo2.nc
+do
+[ -f $file ] || ( ${WGET} -c -nd $PGD_URL/$file.gz ; gunzip $file.gz ; ) 
+done
+