[C2hs] patch applied (c2hs): Split tokens and parser monad out of Lexer.x into their own modules

[Duncan Coutts]

Mon Feb 12 04:20:37 PST 2007  Duncan Coutts <duncan.coutts at worc.ox.ac.uk>
  * Split tokens and parser monad out of Lexer.x into their own modules
  This allows the parser monad to be made a little more abstract.

    M ./c2hs/c/CLexer.x -382 +4
    A ./c2hs/c/CParserMonad.hs
    A ./c2hs/c/CTokens.hs