[GHC] #8767: Add rules involving `coerce` to the libraries

[GHC]

#8767: Add rules involving `coerce` to the libraries
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        Reporter:  nomeata           |            Owner:
            Type:  task              |           Status:  merge
        Priority:  normal            |        Milestone:  7.8.1
       Component:  libraries/base    |          Version:  7.8.1-rc2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:  8718
        Blocking:                    |  Related Tickets:  #2110
-------------------------------------+------------------------------------
Changes (by thoughtpolice):

 * cc: hvr (added)
 * status:  new => merge
 * version:  7.9 => 7.8.1-rc2
 * milestone:   => 7.8.1


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8767#comment:2>
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