[GHC] #2968: add test for C trigraphs

[GHC]

#2968: add test for C trigraphs
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    Reporter:  duncan            |        Owner:  kchugalinskiy
        Type:  task              |       Status:  new          
    Priority:  low               |    Milestone:  7.0.1        
   Component:  Compiler          |      Version:  6.10.1       
    Keywords:                    |     Testcase:               
   Blockedby:                    |   Difficulty:  Unknown      
          Os:  Unknown/Multiple  |     Blocking:               
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown 
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Changes (by kchugalinskiy):

  * owner:  => kchugalinskiy


-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2968#comment:9>
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