[GHC] #13222: Update formalism for join points

[GHC]

#13222: Update formalism for join points
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           Reporter:  lukemaurer     |             Owner:  lukemaurer
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.1
           Keywords:  JoinPoints     |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 I rather flagrantly violated the entreaties in `CoreLint` about updating
 the formalism (namely by adding join points). Need to fix that.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13222>
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