[GHC] #9241: Add a"same" function to Data.Eq

[GHC]

#9241: Add a"same" function to Data.Eq
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        Reporter:  mhwombat          |            Owner:
            Type:  feature request   |           Status:  new
        Priority:  low               |        Milestone:
       Component:  libraries/base    |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by rwbarton):

 Additions to base should go through the
 http://www.haskell.org/haskellwiki/Library_submissions process.

 Also, see #979 which suggests adding the same function under the name
 `equating`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9241#comment:2>
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