[GHC] #961: implement associated type synonyms

[GHC]

#961: implement associated type synonyms
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 Reporter:  Samuel Bronson <naesten at gmail.com>  |          Owner:  chak   
     Type:  task                                |         Status:  new    
 Priority:  normal                              |      Milestone:  6.8    
Component:  Compiler (Type checker)             |        Version:  6.7    
 Severity:  normal                              |     Resolution:         
 Keywords:                                      |     Difficulty:  Unknown
 Testcase:                                      |   Architecture:  Unknown
       Os:  Unknown                             |  
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Changes (by igloo):

  * milestone:  => 6.8

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/961>
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