Add robustness against out of disk space.

Shell is ugly programing language, and by continuing after error, we
were creating recording in wrong directory. Fix that up.

movie.sh.in

@@ -13,8 +13,8 @@ echo DEST_NAME $DEST_NAME 1>&2
 echo FPS $FPS dfps 1>&2
 
 if [ "-$1" == "-start" ]; then
-	mkdir $GIGA_DIR/sm
-	cd $GIGA_DIR/sm
+	mkdir $GIGA_DIR/sm ||  echo Message: NOSPC
+        cd $GIGA_DIR/sm || exit 1
 	@LIBEXECDIR@/movie_audio_rec $FPS &
 	echo $! > $GIGA_DIR/audio.pid
 elif [ "-$1" == "-stop" ]; then