patch applied (cabal): Fix unlit

[Ian Lynagh]

Fri Jun  5 06:08:01 PDT 2009  Ian Lynagh <igloo at earth.li>
  * Fix unlit
  The arguments to isPrefixOf were the wrong way round. We want to see if
  the line starts "\\begin{code}", not if the line is a prefix of that string.

    M ./Distribution/Simple/PreProcess/Unlit.hs -2 +2

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20090605130801-3fd76-514b2adebd800d42a51114986ec26a7f11ea0c3a.gz