patch applied (packages/Win32): Add System.Win32.Security, and populate it with a few bits of the security API

[Simon Marlow]

Thu Aug 23 02:00:53 PDT 2007  Simon Marlow <simonmar at microsoft.com>
  * Add System.Win32.Security, and populate it with a few bits of the security API
  I was going to use this to implement System.Directory.getPermissions,
  but I'm now of the opinion that (a) it's too hard, and (b)
  getPermissions isn't a good API anyway.

    M ./System/Win32.hs +1
    M ./System/Win32/Types.hs +4
    M ./Win32.cabal +1