Add prepare.sh for medium script

RAMSES/testcase_medium/prepare.sh

@@ -3,12 +3,13 @@ source ../machines/occigen-bdw/env
 echo "************************************************************"
 echo "* Prepare medium case in $bench_dir"
 echo "************************************************************"
+mkdir -p $bench_dir/testcase_medium/
 if [[ $HOSTNAME = *"occigen"* ]]; then
-	tar xvf /store/CINES/dci/SHARED/abs/ramses/input.tar -C $bench_dir/.
+	tar xvf /store/CINES/dci/SHARED/abs/ramses/input.tar -C $bench_dir/testcase_medium/.
 elif [[ $HOSTNAME = *"jean-zay"* ]]; then
-	tar xvf $SCRATCH/abs/ramses/input.tar -C $bench_dir/.
+	tar xvf $SCRATCH/abs/ramses/input.tar -C $bench_dir/testcase_medium/.
 elif [[ $HOSTNAME = *"irene"* ]]; then
-	 tar xvf  $CCCSCRATCHDIR/abs/ramses/input.tar -C $bench_dir/.
+	 tar xvf  $CCCSCRATCHDIR/abs/ramses/input.tar -C $bench_dir/testcase_medium/.
 else
 	echo "Hostname not recognized: abort"
 	exit 1