[GHC] #9674: Foldable doesn't have any laws

[GHC]

#9674: Foldable doesn't have any laws
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        Reporter:  dfeuer            |                   Owner:  ekmett
            Type:  task              |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Core Libraries    |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Documentation     |  Unknown/Multiple
  bug                                |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #10063            |  Differential Revisions:
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Comment (by gershomb):

 Also c.f. the proposed law here, pending discussion and tweaking:
 https://www.haskell.org/pipermail/libraries/2015-February/024943.html

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9674#comment:11>
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