[GHC] #16107: Update GCC compiler & friends

[GHC]

#16107: Update GCC compiler & friends
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           Reporter:  flip101           |             Owner:  (none)
               Type:  feature request   |            Status:  new
           Priority:  normal            |         Milestone:
          Component:  Compiler          |           Version:  8.6.3
           Keywords:                    |  Operating System:  Windows
       Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
          Test Case:                    |        Blocked By:
           Blocking:                    |   Related Tickets:
Differential Rev(s):                    |         Wiki Page:
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 gcc used by ghc is now about 1.5 years old. It's going to take some time
 for a new GHC release as well. Would be good to update gcc too. Probably
 it's backwards compatible with old gcc so would be easy to patch.

 https://github.com/ghc/ghc/blob/f11f2521aff16edca150e6eed5102a3da7e4f59a/mk
 /get-win32-tarballs.sh#L104-L114

 source code also points to other tools of which some have newer versions.

 Packages can be browsed here http://repo.msys2.org/mingw/x86_64/

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16107>
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