patch applied (ghc): Remove special lambda unicode character, it didn' t work anyway

[Simon Marlow]

Tue Jan 16 08:11:00 PST 2007  Simon Marlow <simonmar at microsoft.com>
  * Remove special lambda unicode character, it didn't work anyway
  Since lambda is a lower-case letter, it's debatable whether we want to
  steal it to mean lambda in Haskell source.  However if we did, then we
  would probably want to make it a "special" symbol, not just a reserved
  symbol, otherwise writing \x->... (using unicode characters of course)
  wouldn't work, because \x would be treated as a single identifier,
  you'd need a space.

    M ./compiler/parser/Lexer.x -1