patch applied (cabal): Pass the interfaces for the transitive set of dependencies to haddock

[Ian Lynagh]

Wed Sep  3 05:38:13 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Pass the interfaces for the transitive set of dependencies to haddock
  Otherwise we don't get links to types from packages that we don't
  directly depend on.

    M ./Distribution/Simple/Haddock.hs -1 +7

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080903123813-3fd76-e93f17fad37106b07a8242aacbf887b0f0db09c6.gz