[C2hs] patch applied (c2hs): Add note to TODO about cpp directives on first line

[Duncan Coutts]

Thu Jul 26 14:40:38 PDT 2007  Duncan Coutts <duncan.coutts at worc.ox.ac.uk>
  * Add note to TODO about cpp directives on first line
  cpp directives on the very first line of the .chs file are ignored
  because the lexer looks for \n#  This is very confusing to users.

    M ./TODO +3