patch applied (ghc): Tidy tyvar OccNames in TcTyClDecl

[Simon Peyton Jones]

Wed Oct  4 05:12:39 PDT 2006  simonpj at microsoft.com
  * Tidy tyvar OccNames in TcTyClDecl
  
  We want the universal and existential tyvars of a data constructor to
  have distinct OccNames.  It's confusing if they don't (in error messages,
  for example), and with the current way of generating IfaceSyn, it actally
  generates bogus interface files.  (Which bit Roman.)
  
  When IfaceSyn is full of Names, this won't matter so much, but it still
  seems cleaner.
  
  This patch adds a 'tidy' step to the generation of DataCon type 
  variables in TcTyClDecls.tcResultType 
  

    M ./compiler/basicTypes/DataCon.lhs +3
    M ./compiler/typecheck/TcTyClsDecls.lhs -14 +27