* boards/Makefile.am: added machpuzzle activity (uncomplete yet)
		* boards/boards.xml.in:added machpuzzle activity (uncomplete yet)
			* boards/images/superbrain_logo.png:delete
				* boards/traffic/TrafficData:added 40 levels taken from http://www.javascript-games.org/puzzle/rushhour/
					* boards/traffic/traffic-bg.jpg: new background
						* src/boards/Makefile.am:added machpuzzle activity (uncomplete yet)
							* src/boards/menu.c: (item_event): fixed warning if text was empty
								* src/boards/money.c: (process_ok): added bonus bad when user is wrong
									* src/boards/superbrain.c: (superbrain_next_level),
										(superbrain_create_item), (mark_pieces):  moved to fit in background
											* src/boards/traffic.c: (start_board), (repeat),
												(traffic_next_level), (traffic_destroy_all_items),
													(traffic_create_item), (draw_car), (draw_jam), (car_cb),
														(load_level), (cars_from_strv): moved to fit in background