[GHC] #3339: Data.Monoid: Add (<>) as a synonym for mappend

[GHC]

#3339: Data.Monoid: Add (<>) as a synonym for mappend
------------------------------+---------------------------------------------
  Reporter:  bos              |          Owner:                  
      Type:  feature request  |         Status:  patch           
  Priority:  normal           |      Milestone:  Not GHC         
 Component:  libraries/base   |        Version:  7.2.1           
Resolution:                   |       Keywords:                  
  Testcase:                   |      Blockedby:                  
Difficulty:  Unknown          |             Os:  Unknown/Multiple
  Blocking:                   |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown     |  
------------------------------+---------------------------------------------
Changes (by tibbe):

  * version:  6.10.3 => 7.2.1


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3339#comment:31>
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