patch applied (cabal-install): Disable cabal upgrade and add cabal install --upgrade-dependencies

[Duncan Coutts]

Mon May 31 06:03:06 PDT 2010  Duncan Coutts <duncan at haskell.org>
  * Disable cabal upgrade and add cabal install --upgrade-dependencies
  cabal upgrade now gives an error message telling people to use install
  or, if they know what they're doing, install --upgrade-dependencies

    M ./Distribution/Client/Install.hs -45 +16
    M ./Distribution/Client/Setup.hs -1 +10
    M ./Main.hs -1 +1

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=cabal-install;a=darcs_commitdiff;h=20100531130306-adfee-863064f459d9e5c8a123c0bb729b285df7ce70d2.gz