Pathfinding/Dungeon Generation bug [b33]

[Fungah]

Started a new Dwarf Berserker and discovered that the dwarf starting dungeon rendered about two-thirds of the first-floor inaccessible behind walls. More annoyingly, the starting companion detected an enemy behind one of the walls and now won't get out of a corner. My savefile is located at: http://www.megaupload.com/?d=L4Y5BK8J