Haskell'

While we work to define the scope of this project, Haskell' (Haskell Prime) will be the code name for the next Haskell standard. I thought it best to pick a neutral name, since "Haskell 2", "Haskell 06", "Haskell 1.6", and "Industrial Haskell" are all loaded names. Once a scope is defined, we can start to worry about the real name of the standard.