-Add: C-ified GameLoop_Structure(), figured out a lot of variables and names along the way. Also added 2 enhancements:
1) Repair cost is calculated unfair (Palace repair is for free, and you always under-pay)
2) If one structure gives a script error, all structures after it are not handled in the GameLoop
-Add: Structure_Place(), and 3 enhancement related to it:
1) Building walls did not clear owner bits correctly
2) Building on slabs now no longer degrades your structure
3) Building a structure correctly removes fog for all tiles in the structure
-Add: fix 3 Dune2 bugs in Scenario loading (and document it):
1) '+' after reinforcement is ignored
2) '% hitpoints' of structures is ignored
3) 'Track' and 'Wheel' in Teams should be 'Tracked' and 'Wheeled'