You know the drill (er, screwdriver): someone releases a shiny new gadget and the internet tears it apart, both figuratively and literally. iFixit did the latter like clockwork, getting its tools on the new 13-inch MacBook Pro with Retina display. As with its older sibling, the notebook didn't do all that well on the repairability scale, scoring a two out of 10 -- slightly better than its predecessor's lowly one. Why so low? You can b