[GHC] #2362: allow full import syntax in GHCi

[GHC]

#2362: allow full import syntax in GHCi
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    Reporter:  Isaac Dupree      |        Owner:  igloo       
        Type:  feature request   |       Status:  new         
    Priority:  high              |    Milestone:  6.14.1      
   Component:  Compiler          |      Version:  6.8.2       
    Keywords:  ghci, import      |   Difficulty:  Unknown     
          Os:  Unknown/Multiple  |     Testcase:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
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Comment(by simonmar):

 Oh, one more thing: we should have test cases for the new features,
 including the tricky cases like multiple imports and combinations of
 imports and `:m`, and re-loading of source files to trigger the replay
 functionality.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2362#comment:19>
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