[GHC] #1856: Improve error message for mutally recursive modules

[GHC]

#1856: Improve error message for mutally recursive modules
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 Reporter:  guest                                        |          Owner:            
     Type:  feature request                              |         Status:  new       
 Priority:  normal                                       |      Milestone:  6.8 branch
Component:  Compiler                                     |        Version:  6.6       
 Severity:  normal                                       |     Resolution:            
 Keywords:  Modules Recursively Imported Error Messages  |     Difficulty:  Unknown   
 Testcase:                                               |   Architecture:  x86       
       Os:  Linux                                        |  
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Changes (by simonmar):

  * summary:  Haskell determines that the modules are recursively imported
              but they are not, but the problem was the name
              of a module didn't match the file name where it
              was holded => Improve error message for mutally
              recursive modules

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1856#comment:3>
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