patch applied (packages/Cabal): Remove deprecated --copy-prefix= feature

[Ian Lynagh]

Mon Dec 28 12:35:13 PST 2009  Duncan Coutts <duncan at haskell.org>
  * Remove deprecated --copy-prefix= feature
  It's been deprecated since Cabal 1.1.4 (over 3 years).
  The replacement since then has been --destdir=

    M ./Distribution/Make.hs -2
    M ./Distribution/Simple/InstallDirs.hs -7 +1
    M ./Distribution/Simple/Setup.hs -7

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20091228203513-adfee-e3fdf24404ba71fe3ce7f678b571d79675e139ff.gz