[GHC] #14534: Split T12971 into its own Makefile

[GHC]

#14534: Split T12971 into its own Makefile
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        Reporter:  dfeuer            |                Owner:  (none)
            Type:  task              |               Status:  patch
        Priority:  low               |            Milestone:  8.8.1
       Component:  Test Suite        |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4252
       Wiki Page:                    |
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Changes (by bgamari):

 * milestone:  8.6.1 => 8.8.1


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14534#comment:2>
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