[GHC] #5198: -ddump-to-file should deposit files in target not source directory

[GHC]

#5198: -ddump-to-file should deposit files in target not source directory
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    Reporter:  ezyang            |       Owner:              
        Type:  bug               |      Status:  new         
    Priority:  normal            |   Component:  Compiler    
     Version:  7.1               |    Keywords:              
    Testcase:                    |   Blockedby:              
          Os:  Unknown/Multiple  |    Blocking:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
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 One example where things can go wrong if you don't do this is if you're
 building GHC with dumps: the stage2 dumps will clobber the stage1 dumps.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5198>
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