patch applied (cabal): Add --prog-arg= and make --prog-args parse quotes

[Duncan Coutts]

Sat Sep  1 10:17:42 PDT 2007  Duncan Coutts <duncan at haskell.org>
  * Add --prog-arg= and make --prog-args parse quotes
  So this provides two ways of passing options that contain embeded spaces:
  --foo-args='--bar --baz="path with spaces in"'
  --foo-arg=--bar --foo-arg=--baz="path with spaces in"
  all args passed this way are collected in order.

    M ./Distribution/Simple/Setup.hs -27 +59
    M ./doc/Cabal.xml -1 +28