patch applied (packages/Cabal): Check if dist/ exists before trying to delete it

[Ian Lynagh]

Sat Jan 26 14:35:28 PST 2008  Duncan Coutts <duncan at haskell.org>
  * Check if dist/ exists before trying to delete it
  Saves printing an error message when it fails.

    M ./Distribution/Simple.hs -1 +3

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20080126223528-adfee-71497a4220c5fc54a13d468a21ecd2ca337d69b1.gz