patch applied (cabal-install): Rewrite the bootstrap.sh script

[Duncan Coutts]

Thu Jan 15 02:22:10 PST 2009  Duncan Coutts <duncan at haskell.org>
  * Rewrite the bootstrap.sh script
  Hopefully more useful and more robust. In particular it does not
  download and install packages where suitable versions are already
  installed. It also checks for deps.

    M ./bootstrap.sh -37 +164

View patch online:
http://darcs.haskell.org/cabal-install/_darcs/patches/20090115102210-adfee-c7cd8222daf96c07ad3f01cc681853eea23b88fd.gz