patch applied (ghc): Fix Trac #1525

[Simon Peyton Jones]

Thu Aug  2 04:12:04 PDT 2007  simonpj at microsoft.com
  * Fix Trac #1525
  
  A Name used to have a Parent, but no longer has.  When we want to 
  print info about data type T and data constructor MkT, the info about
  T already describes MkT so we want to discard the latter.  Now that
  Names don't have a Parent, we must do that in a different way,
  using implicitTyThings
  
  Test is ghci011
  
  

    M ./compiler/ghci/InteractiveUI.hs -15 +17