[GHC] #5542: also parse class/instance declarations as "HEAD <= CONTEXT where"

[GHC]

#5542: also parse class/instance declarations as "HEAD <= CONTEXT where"
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        Reporter:  nfrisby           |                   Owner:
            Type:  feature request   |                  Status:  closed
        Priority:  normal            |               Milestone:  ⊥
       Component:  Compiler          |                 Version:  7.2.1
  (Parser)                           |                Keywords:
      Resolution:  invalid           |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by thomie):

 * status:  new => closed
 * resolution:   => invalid


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5542#comment:8>
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