[GHC] #11716: Make TypeInType stress test work

[GHC]

#11716: Make TypeInType stress test work
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           Reporter:  goldfire       |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.0.1
          Component:  Compiler       |           Version:  8.1
           Keywords:  TypeInType     |  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 used the attached file during my job talk. It is good `TypeInType`
 stress test. This bug is to track several fixes that have been necessary
 to get it working. I have these fixes locally and will push in due course.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11716>
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