[GHC] #2640: Treat -X flags consistently in GHCi

[GHC]

#2640: Treat -X flags consistently in GHCi
-------------------------------------+-------------------------------------
              Reporter:  simonpj     |            Owner:
                  Type:  feature     |           Status:  new
  request                            |        Milestone:  7.10.1
              Priority:  lowest      |          Version:  6.8.3
             Component:  GHCi        |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by thomie):

 * cc: hvr (added)
 * failure:   => None/Unknown
 * component:  Compiler => GHCi


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2640#comment:10>
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