[GHC] #8796: -ddump-splices prints to error stream

[GHC]

#8796: -ddump-splices prints to error stream
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       Reporter:  jstolarek                |             Owner:
           Type:  bug                      |            Status:  new
       Priority:  normal                   |         Milestone:
      Component:  Compiler                 |           Version:  7.9
       Keywords:                           |  Operating System:
   Architecture:  Unknown/Multiple         |  Unknown/Multiple
     Difficulty:  Easy (less than 1 hour)  |   Type of failure:
     Blocked By:                           |  None/Unknown
Related Tickets:                           |         Test Case:
                                           |          Blocking:
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 I just noticed that unlike other dump flags, `-ddump-splices` dumps to the
 error stream. I don't think this difference in behaviour is intended.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8796>
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