[GHC] #3490: Relax superclass restrictions

[GHC]

#3490: Relax superclass restrictions
-------------------------------------+-------------------------------------
        Reporter:  simonpj           |                   Owner:
            Type:  feature request   |  DevarshDesai
        Priority:  normal            |                  Status:  new
       Component:  Compiler          |               Milestone:  ⊥
      Resolution:                    |                 Version:  6.10.4
Operating System:  Unknown/Multiple  |                Keywords:
 Type of failure:  None/Unknown      |            Architecture:
      Blocked By:                    |  Unknown/Multiple
 Related Tickets:                    |               Test Case:
                                     |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by DevarshDesai):

 * owner:   => DevarshDesai
 * failure:   => None/Unknown


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3490#comment:5>
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