patch applied (ghc): Fixed errors in " clunky" definition for pattern guards

[Isaac Jones]

Sun Jan  7 13:52:49 PST 2007  ijones at syntaxpolice.org
  * Fixed errors in "clunky" definition for pattern guards
  Amusingly, this little error in the GHC manual came from the original
  SPJ proposal for pattern guards from 1997 and even slipped into the
  Haskell Workshop 2000 paper by SPJ and Martin Erwig.  It's almost 10
  years old.

    M ./docs/users_guide/glasgow_exts.xml -2 +2