[GHC] #14529: Refactor ConDecl

[GHC]

#14529: Refactor ConDecl
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        Reporter:  simonpj           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by goldfire):

 Agreed, but don't use `LHsQTyVars`. This is used in `ConDeclH98`, but it
 shouldn't be. It should be a `[LHsTyVarBndr p]`. I've actually refactored
 this locally, but it's all tied up with my other very slowly-moving work.

 I haven't touched `ConDeclGADT` though, so by all means go ahead.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14529#comment:1>
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