Holy Cow! They totally butchered the Configuration.h file. I didn't check the other source files. Do you have a MakerFarm printer? If so, grab this fork, compile it, load it, and it is going to be super close to what you want.

https://github.com/beckdac/Marlin

Even if you don't have a MakerFarm printer, I would suggest you grab this fork, and then start at the beginning of my comments, and use those comments to turn on 3-Point bed leveling.