Use "latest" in object style browser version definitions.

Fixed an error with the wrong var name, and added 'latest' to the object version handeling.

I hacked in a '*/latest' implementation that makes the commented out tests pass, but it was pretty ugly with the way the code is now, so I took it out.

What do you think, submit it ugly, refactor everything to make it fit in cleanly, or maybe I'm the only one lazy enough to want to specify { '*': [ 'latest', 'next'] } and similar?