[GHC] #9734: Provide macro __GLASGOW_HASKELL_TH__

[GHC]

#9734: Provide macro  __GLASGOW_HASKELL_TH__
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        Reporter:  nomeata           |                Owner:
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  7.10.1
       Component:  Compiler          |              Version:  7.8.3
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11322            |  Differential Rev(s):  Phab:D386
       Wiki Page:                    |
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Changes (by hvr):

 * related:   => #11322


Comment:

 Turns out, using `YES`/`NO` as values for CPP constants is not a good
 idea... :-/

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9734#comment:5>
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