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

[GHC]

#9218: Upgrade the version of MinGW shipped with GHC
-------------------------------------+-------------------------------------
        Reporter:  komadori          |                   Owner:  gintas
            Type:  task              |                  Status:  patch
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Build System      |                 Version:  7.8.2
      Resolution:                    |                Keywords:
Operating System:  Windows           |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:  9014              |                Blocking:  9215
 Related Tickets:  #3390 #10705      |  Differential Revisions:  Phab:D339
  #10726                             |
-------------------------------------+-------------------------------------

Comment (by thomie):

 awson: your patch is now in https://phabricator.haskell.org/D1123, maybe
 you could give it a quick glance and a thumbs up? Please either comment
 here or by creating an account on [wiki:Phabricator].

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9218#comment:25>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler