patch applied (ghc): Avoid making Either String an instance of Monad in the Haddock parser

[David Waern]

Wed Nov 14 12:40:50 PST 2007  David Waern <david.waern at gmail.com>
  * Avoid making Either String an instance of Monad in the Haddock parser

    M ./compiler/main/GHC.hs -1 +4
    M ./compiler/parser/HaddockParse.y -13 +18
    M ./compiler/parser/HaddockUtils.hs -2 +2
    M ./compiler/parser/Parser.y.pp -10 +10