Folk ARPS

We blow up some cars in Camp Maxwell (Stratis!). Helicopters ensue.

Other than sliiiiiiiiight server-destroying technical issues, this seemed to go really well. Feedback welcomed as always.

Version history:
v2
- fixed locality issue with creategarrison
- distributed camp maxwell garrison a bit more evenly
- rejiggered reinforcements

v1
- Initial release

The bunkers on the east side of maxwell might have a bit too much AI in them, although it was fun clearing them.