patch applied (cabal-install): Don't echo when prompting for the hackage upload password.

[Duncan Coutts]

Thu May  1 14:44:56 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Don't echo when prompting for the hackage upload password.
  Fixes ticket #268. And use newtypes for the username and password,
  just to be more sure we're not mixing them up with other strings.

    M ./Hackage/Config.hs -6 +6
    M ./Hackage/Setup.hs -4 +7
    M ./Hackage/Types.hs -2 +2
    M ./Hackage/Upload.hs -8 +21

View patch online:
http://darcs.haskell.org/cabal-install/_darcs/patches/20080501214456-adfee-d7d71bfe53f413ae92eae0f8bcdb307fb9227239.gz