[GHC] #13267: Constraint synonym instances

[GHC]

#13267: Constraint synonym instances
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        Reporter:  ezyang            |                Owner:  (none)
            Type:  bug               |               Status:  merge
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC accepts       |            Test Case:
  invalid program                    |  polykinds/T13267
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * status:  closed => merge
 * milestone:   => 8.2.1


Comment:

 It would be nice to merge 740ecda32116abe84b6d7d4786b3e2ad9c8ba2a4 into
 8.2, which notes this change in the release notes.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13267#comment:8>
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