[GHC] #7790: Add dummy undefined symbols to indicate ways

[GHC]

#7790: Add dummy undefined symbols to indicate ways
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        Reporter:  ezyang            |                Owner:  ezyang
            Type:  task              |               Status:  new
        Priority:  low               |            Milestone:  8.0.1
       Component:  Compiler          |              Version:
      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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Changes (by ezyang):

 * priority:  normal => low


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7790#comment:6>
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