patch applied (ghc): Tidy and trim the type environment in mkBootModDetails

[Simon Marlow]

Fri Nov 23 07:35:19 PST 2007  simonpj at microsoft.com
  * Tidy and trim the type environment in mkBootModDetails
  
  Should fix Trac #1833
  
  We were failing to trim the type envt in mkBootModDetails, so several
  functions all called (*), for example, were getting into the interface.
  Result chaos.  It only actually bites when we do the retyping-loop thing,
  which is why it's gone so long without a fix.
  
  

    M ./compiler/main/TidyPgm.lhs -25 +47