Fedora's foundations meet proprietary drivers

It isn't exactly the same issue this time

1. They can go back to the older kernel while they could not go back to the older X.
2. The system should fall back to the opensource nouveau driver if the nvidia doesn't work.
3. This breakage is going to occur all the time. That was a known risk at the time of acceptance of this feature. I think the confusion which caused the kerfluffle was that there wasn't a finished agreement on what happens when that breakage occurs. Some people thought it was that the Working Group would work out methods to help an affected user to deal with it. Others thought that it was the Working Group would have the power to stop other people from breaking their release.