Remove the old style -- # Haddock comments.
Haddock 0.x supported -- # style comments for Haddock pragma and while this seems to have been long forgotten and not documented, it's still kicking in the lexer. I think this is a good time to get rid of these all together.
Relevant Haddock ticket http://trac.haskell.org/haddock/ticket/171
I'll hopefully send in patches removing these from the lexer/parser tomorrow, if all goes well (unless anyone feels eager to do it, then please, you're most welcome to do so!).