[GHC] #9218: Upgrade the version of MinGW shipped with GHC

[GHC]

#9218: Upgrade the version of MinGW shipped with GHC
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       Reporter:  komadori          |             Owner:  komadori
           Type:  task              |            Status:  new
       Priority:  normal            |         Milestone:  7.10.1
      Component:  Build System      |           Version:  7.8.2
       Keywords:                    |  Operating System:  Windows
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:  #3390             |
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 The Windows binary distribution of GHC incorporates a version of MinGW
 which has not been updated for several releases and is now out-of-date. It
 should be upgraded. The previous time this was done appears to correlate
 with ticket #3390.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9218>
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