patch applied (cabal): Document the fact that --user now changes the default --prefix

Wed Jan 23 18:53:52 PST 2008 Duncan Coutts * Document the fact that --user now changes the default --prefix to $HOME/.cabal on unix and on WinXP: (not sure about vista) C:\Documents And Settings\user\Application Data\cabal M ./doc/Cabal.xml -13 +24