patch applied (cabal): "Add cabal sdist --zip flag for creating zip archives"

[Duncan Coutts]

Thu Aug 18 10:17:21 PDT 2011  Duncan Coutts <duncan at community.haskell.org>
  * Add cabal sdist --zip flag for creating zip archives
  Handy if you want to send sources to people who do not grok .tar.gz
  Requires that the 'zip' program be installed (unlike for .tar.gz where
  we do it internally so that it works on all systems).

    M ./cabal-install/Distribution/Client/Setup.hs -2 +54
    M ./cabal-install/Distribution/Client/SrcDist.hs -8 +50
    M ./cabal-install/Main.hs -4 +4

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=cabal;a=darcs_commitdiff;h=20110818171721-5c91e-dd4a49ca896ea22f542a86327e3da35fe707d141.gz