[GHC] #11472: Remove CallStack CPP guards in GHC 8.2

[GHC]

#11472: Remove CallStack CPP guards in GHC 8.2
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        Reporter:  bgamari           |                Owner:
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 rwbarton astutely points out that `MIN_VERSION_GLASGOW_HASKELL`, which is
 used in the above commit (which was merged to `ghc-8.0` as well), was only
 introduced in ghc 7.10. Looks like we'll need to revert to
 `__GLASGOW_HASKELL__` in `ghc-8.0`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11472#comment:3>
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