[GHC] #8878: Export runTcInteractive from TcRnDriver

[GHC]

#8878: Export runTcInteractive from TcRnDriver
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        Reporter:  holzensp    |            Owner:  holzensp
            Type:  feature     |           Status:  merge
  request                      |        Milestone:  7.8.1
        Priority:  lowest      |          Version:  7.8.1-rc2
       Component:  Compiler    |         Keywords:
      Resolution:              |     Architecture:  Unknown/Multiple
Operating System:              |       Difficulty:  Easy (less than 1 hour)
  Unknown/Multiple             |       Blocked By:
 Type of failure:              |  Related Tickets:
  None/Unknown                 |
       Test Case:              |
        Blocking:              |
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Comment (by holzensp):

 I didn't include the export in GHC, because of Simon M's argument on the
 mailing list [1] that GHC doesn't export TcRn, which is required for
 runTcInteractive. I'm fine with it either way, though.

 Methinks it is a rather harmless change, so I see no issue with including
 it in 7.8 as you have now done. Thanks much ;)

 [1] http://www.haskell.org/pipermail/ghc-devs/2014-February/004013.html

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8878#comment:5>
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