[GHC] #7985: Allow openFile on unknown file type

[GHC]

#7985: Allow openFile on unknown file type
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        Reporter:  singpolyma        |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        Priority:  normal            |               Milestone:
       Component:  Core Libraries    |                 Version:  7.6.3
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Changes (by ekmett):

 * owner:  ekmett =>


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7985#comment:3>
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