[GHC] #9700: Support C structures in Haskell FFI

[GHC]

#9700: Support C structures in Haskell FFI
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       Reporter:  Yuras              |                   Owner:
           Type:  feature request    |                  Status:  new
       Priority:  normal             |               Milestone:
      Component:  Compiler           |                 Version:  7.8.3
       Keywords:                     |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Unknown            |         Type of failure:
     Blocked By:                     |  None/Unknown
Related Tickets:                     |               Test Case:
                                     |                Blocking:
                                     |  Differential Revisions:  Phab:D252
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 This ticket is for tracking progress on [[CStructures]] language extension
 proposal.

 The idea is to support C structures in Haskell FFI. See wiki for details.

 If it will be accepted, I'm going to implement it in few steps. The first
 one is to support structures as return value. Platform specific part for
 that is already implemented, see Phab:D252

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9700>
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