[GHC] #4123: Control.Concurrent.MVar doesn't need to depend on the Prelude

[GHC]

#4123: Control.Concurrent.MVar doesn't need to depend on the Prelude
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    Reporter:  tibbe             |        Owner:                     
        Type:  bug               |       Status:  patch              
    Priority:  normal            |    Milestone:                     
   Component:  libraries/base    |      Version:  6.13               
    Keywords:                    |   Difficulty:                     
          Os:  Unknown/Multiple  |     Testcase:                     
Architecture:  Unknown/Multiple  |      Failure:  Building GHC failed
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Changes (by igloo):

  * status:  new => patch


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4123#comment:1>
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