[GHC] #9043: Add missing type class instances for data types in GHC.Generics

[GHC]

#9043: Add missing type class instances for data types in GHC.Generics
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        Reporter:  ocharles          |            Owner:  dreixel
            Type:  feature request   |           Status:  patch
        Priority:  normal            |        Milestone:
       Component:  libraries/base    |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by ocharles):

 I'd be interested in helping tidy up the stuff in GHC.Generics to use data
 kinds, btw. So dreixel, if that's something that you think is somewhat
 obvious and wouldn't mind me doing it - just let me know!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9043#comment:17>
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