[GHC] #3818: ghc-pkg prints warnings to stdout instead of stderr

[GHC]

#3818: ghc-pkg prints warnings to stdout instead of stderr
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    Reporter:  nomeata           |        Owner:              
        Type:  bug               |       Status:  new         
    Priority:  normal            |    Milestone:  7.2.1       
   Component:  Package system    |      Version:  6.12.1      
    Keywords:                    |     Testcase:              
   Blockedby:                    |   Difficulty:              
          Os:  Unknown/Multiple  |     Blocking:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
---------------------------------+------------------------------------------
Changes (by dterei):

 * cc: dterei (added)


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3818#comment:4>
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