[GHC] #3353: Add CLDouble support

[GHC]

#3353: Add CLDouble support
---------------------------------+------------------------------------------
    Reporter:  igloo             |        Owner:              
        Type:  bug               |       Status:  new         
    Priority:  normal            |    Milestone:  _|_         
   Component:  Compiler          |      Version:  6.12.1      
    Keywords:                    |   Difficulty:  Unknown     
          Os:  Unknown/Multiple  |     Testcase:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
---------------------------------+------------------------------------------

Comment(by guest):

 error while compiling C2HS with GHC 6.12.1


 {{{
 [24 of 26] Compiling C2HS.C.Info      ( src/C2HS/C/Info.hs,
 dist/build/c2hs/c2hs-tmp/C2HS/C/Info.o )

 src/C2HS/C/Info.hs:117:53:
     Not in scope: type constructor or class `CLDouble'

 src/C2HS/C/Info.hs:142:70:
     Not in scope: type constructor or class `CLDouble'
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3353#comment:2>
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