[GHC] #3647: unify handling and error messages for -X vs. {-#LANGUAGE ...#-} pragmas/extensions

[GHC]

#3647: unify handling and error messages for -X vs. {-#LANGUAGE ...#-}
pragmas/extensions
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  Reporter:  eflister           |          Owner:                                                  
      Type:  feature request    |         Status:  reopened                                        
  Priority:  normal             |      Milestone:  6.14 branch                                     
 Component:  Compiler (Parser)  |        Version:  6.10.4                                          
Resolution:                     |       Keywords:  language pragma extensions error message warning
Difficulty:                     |             Os:  Unknown/Multiple                                
  Testcase:                     |   Architecture:  Unknown/Multiple                                
   Failure:  None/Unknown       |  
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Changes (by igloo):

  * milestone:  => 6.14 branch


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3647#comment:6>
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