ship default background in zip package

- add static resources to zip package
- cat background.

specificdoit.sh

@@ -35,6 +35,9 @@ specific_run()
 create_zip_package()
 {
     dest=artloglaby/
+
+    # some static resources outside jar.
+    static_resources=lab/titou20.xpm
     if [[ -e $dest ]]
     then
 	echo "[ERROR] $dest already exists ! move it away ">&2
@@ -49,7 +52,15 @@ create_zip_package()
 	mkdir $dest/lab
 	mkdir $dest/libs
 	cp scripts/laby.sh $dest
-
+	for sr in $static_resources
+	do
+	    if [[ -f $sr ]]
+	    then
+		cp $sr $dest/$sr
+	    else
+		echo "[ERROR] expecting static resource $sr" >&2
+	    fi
+	done
 	MAINJAR=""
 	pushd dist/lib
 	findmainjar