[GHC] #10726: Upgrade MingW-w64 distributions for windows

[GHC]

#10726: Upgrade MingW-w64 distributions for windows
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        Reporter:  Phyx-             |                Owner:
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  7.10.3
       Component:  Build System      |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9218 #9014       |  Differential Rev(s):  Phab:D1123
  #10435                             |
       Wiki Page:                    |
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Comment (by Phyx-):

 I don't really know how `stack` works, and I am sort of confused why
 `--interactive` is involved here. Never the less, I don't think anything
 broke here, interactive was just never fixed. Previously when it built
 `cabal run` was used as a test. This wouldn't use the runtime linker and
 should still be working.

 I think the duplicate symbols error is coming from the fact that the Rts
 re-exports some symbols from `mingw` but not all. it includes
 `SymI_HasProto(coshf)` under the comment:

 {{{
 /* These are statically linked from the mingw libraries into the ghc
    executable, so we have to employ this hack. */
 }}}

 Does `run` still produce a working binary?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10726#comment:37>
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