Survival Mode Implemented, Success With Alpha Textures/Overlays

Got a lot done in the past couple of days.  Managed to implement Survival Mode in my test map, and then in Escape From Parkdale itself.  Also managed to figure out how to get the GIMP to save the alpha channel in targa files so I could make alpha textures as well.  I still miss Photoshop...  No screens yet, but later on or tomorrow I'll have some!