[haskell-platform] #17: mtl should appear before happy in the dependency list

[haskell-platform]

#17: mtl should appear before happy in the dependency list
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 Reporter:  dons      |       Owner:  dons
     Type:  defect    |      Status:  new 
 Priority:  major     |   Milestone:      
Component:  Platform  |    Keywords:      
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 Currently, we manually put happy at the top of the dependency list. But
 happy depends on mtl, which needs to appear earlier.

 This whole situation is because we're not recursively pulling in
 dependencies from tools.

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Ticket URL: <http://trac.haskell.org/haskell-platform/ticket/17>
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