Store original config

src/freedombone-app-icecast

@@ -600,6 +600,13 @@ function install_icecast {
         mkdir -p /etc/ices2
     fi
 
+    # store the original config if it exists
+    if [ -f /etc/ices2/ices-playlist.xml ]; then
+        if [ ! -f /etc/ices2/ices-playlist.orig ]; then
+            mv /etc/ices2/ices-playlist.xml /etc/ices2/ices-playlist.orig
+        fi
+    fi
+
     { echo '<?xml version="1.0"?>';
       echo '<ices>';
       echo '    <!-- run in background -->';