patch applied (ghc-7.0/ghc): Yet another go at CoreArity

[Simon Marlow]

Wed Oct 27 11:56:30 PDT 2010  simonpj at microsoft.com
  * Yet another go at CoreArity
  
  Amazingly, there were still Wrong Things in the arity analysis, 
  exposed by my fiddling with eta expansion.
  
  I simplified the code, clarified the comments, added more examples,
  and tidied it all up.  I hope it's better this time.

    M ./compiler/coreSyn/CoreArity.lhs -72 +107

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc-7.0/ghc;a=darcs_commitdiff;h=20101027185630-1287e-b5dc07abe81a38284fa90da8ac682ae5371e3ca5.gz