patch applied (packages/Win32): add System.Win32.FileMapping - file mapping api and helpers

[Ross Paterson]

Wed May 10 09:51:08 PDT 2006  Esa Ilari Vuokko <ei at vuokko.info>
  * add System.Win32.FileMapping - file mapping api and helpers
  
  This is non-portable, as it uses Foreign.Concurrent.newForeignPtr.

    M ./System/Win32.hs +2
    A ./System/Win32/FileMapping.hsc
    M ./Win32.cabal +1
    M ./package.conf.in +1