[GHC] #9550: Add uncons to Data.List

[GHC]

#9550: Add uncons to Data.List
-------------------------------------+-------------------------------------
              Reporter:  dfeuer      |            Owner:
                  Type:  feature     |           Status:  patch
  request                            |        Milestone:
              Priority:  normal      |          Version:  7.8.2
             Component:              |         Keywords:
  libraries/base                     |     Architecture:  Unknown/Multiple
            Resolution:              |       Difficulty:  Easy (less than 1
      Operating System:              |  hour)
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by ekmett):

 * difficulty:  Unknown => Easy (less than 1 hour)
 * type:  task => feature request


Comment:

 There were no objections on the list and positive noises from the
 committee. It looks good to me.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9550#comment:2>
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