[GHC] #4314: Move 'split' from the 'RandomGen' class to a new 'SplittableGen' class

[GHC]

#4314: Move 'split' from the 'RandomGen' class to a new 'SplittableGen' class
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    Reporter:  TomMD             |       Owner:                  
        Type:  proposal          |      Status:  new             
    Priority:  normal            |   Component:  libraries/random
     Version:  6.12.3            |    Keywords:                  
    Testcase:                    |   Blockedby:                  
          Os:  Unknown/Multiple  |    Blocking:                  
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
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 The proposal is to:

 1) Create the 'SplittableGen' class in System.Random:
 class SplittableGen g where split :: g -> (g,g)

 2) (Re)move  the 'split' routine from RandomGen.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4314>
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