[GHC] #9004: Add sortOn function to Data.List

[GHC]

#9004: Add sortOn function to Data.List
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        Reporter:              |            Owner:
  JohnWiegley                  |           Status:  patch
            Type:  feature     |        Milestone:  7.10.1
  request                      |          Version:  7.8.2
        Priority:  normal      |         Keywords:
       Component:              |     Architecture:  Unknown/Multiple
  libraries/base               |       Difficulty:  Easy (less than 1 hour)
      Resolution:              |       Blocked By:
Operating System:              |  Related Tickets:
  Unknown/Multiple             |
 Type of failure:              |
  None/Unknown                 |
       Test Case:              |
        Blocking:              |
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Changes (by bernalex):

 * status:  new => patch


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9004#comment:1>
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