[GHC] #5865: threadDelay is disrupted by system clock changes

[GHC]

#5865: threadDelay is disrupted by system clock changes
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    Reporter:  joeyadams         |       Owner:  pcapriotti                 
        Type:  bug               |      Status:  patch                      
    Priority:  high              |   Milestone:  7.4.2                      
   Component:  Runtime System    |     Version:  7.4.1                      
    Keywords:                    |          Os:  Unknown/Multiple           
Architecture:  Unknown/Multiple  |     Failure:  Incorrect result at runtime
  Difficulty:  Unknown           |    Testcase:                             
   Blockedby:                    |    Blocking:                             
     Related:                    |  
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Comment(by pcapriotti):

 Added patch for win32, using `QueryPerformanceCounter` instead of
 `GetSystemTimeAsFileTime`.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5865#comment:11>
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