patch applied (cabal): Tweaks to make Cabal play nicer with haddock

[Ian Lynagh]

Thu Mar  8 07:57:18 PST 2007  Ian Lynagh <igloo at earth.li>
  * Tweaks to make Cabal play nicer with haddock
  
  The path for the html docs now includes the package name at the end,
  which works nicer for multiple packages sharing a contents/index.
  
  Use --ghc-pkg when available (in haddock darcs only currently) to tell
  haddock which ghc-pkg to use.
  
  Use --allow-missing-html when available (in haddock darcs only
  currently) to tell haddock not to worry if it can't find the HTML for
  packages we depend on. This is necessary when haddocking a group of
  packages before moving them all into place.

    M ./Distribution/Simple.hs -6 +19
    M ./Distribution/Simple/Install.hs -3 +3
    M ./Distribution/Simple/LocalBuildInfo.hs -3 +5
    M ./Distribution/Simple/Register.hs -1 +5