patch applied (packages/base): Require Cabal version >= 1.6

[Ian Lynagh]

Wed Jan 21 17:12:51 PST 2009  Ian Lynagh <igloo at earth.li>
  * Require Cabal version >= 1.6

    M ./base.cabal -1 +1

View patch online:
http://darcs.haskell.org/packages/base/_darcs/patches/20090122011251-3fd76-3b8ef55be5cd9567be744db9072c6ce1863dd85f.gz