patch applied (ghc-6.6/ghc): add prep-bin-dist-mingw to binary-dist target, and add a separate target for publish-binary-dist

[Simon Marlow]

Wed Apr 11 08:45:12 PDT 2007  Simon Marlow <simonmar at microsoft.com>
  * add prep-bin-dist-mingw to binary-dist target, and add a separate target for publish-binary-dist

    M ./Makefile -2 +5