patch applied (cabal): unlit preserves comments for Haddock's benefit. More complex algorithm to handle cases where we want blank lines (containing whitespace) to become comment lines in the output.

[Duncan Coutts]

Tue Dec  4 13:15:50 PST 2007  alistair at abayley.org
  * unlit preserves comments for Haddock's benefit. More complex algorithm to handle cases where we want blank lines (containing whitespace) to become comment lines in the output.

    M ./Distribution/Simple/PreProcess/Unlit.hs -59 +73