HOUS3G.dlg fix

In Tutu, HOUSG3 has an NPC interjection on state 0.  In BGEE, the
states have been reordered, and Tutu’s state 0 is now state 1.
Creating a state variable %housg3state0% to fix.

http://forums.gibberlings3.net/index.php?showtopic=26410