[GHC] #3722: Haskeline Iconv needs HAVE_LANGINFO_H

[GHC]

#3722: Haskeline Iconv needs HAVE_LANGINFO_H
---------------------------+------------------------------------------------
    Reporter:  donn        |       Owner:              
        Type:  bug         |      Status:  new         
    Priority:  normal      |   Component:  Compiler    
     Version:  6.12.1 RC1  |    Keywords:              
          Os:  Other       |    Testcase:              
Architecture:  x86         |     Failure:  None/Unknown
---------------------------+------------------------------------------------
 per libraries/base/GHC/IO/Encoding/Iconv.hs,
 libraries/haskeline/System/Console/Haskeline/Backend/Iconv.hsc should test
 for HAVE_LANGINFO_H, and default codeset to "" in its absence.  (No
 langinfo.h on Haiku.)

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3722>
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