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

[GHC]

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

 Just adding a clarifying comment. The reason for the requested merge to
 7.10 is so that gcc can use response files internally, fixing an issue
 with long linker command line options. This was originally raised in
 https://ghc.haskell.org/trac/ghc/ticket/8596. The discussion leading up to
 the requested merge is on Github at
 https://github.com/commercialhaskell/stack/issues/795#issuecomment-134758338

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10726#comment:14>
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