It now compiles using Visual Studio 2008. It does not compile under
VS2010 however, but I think this is because distutils does not
support this compiler (yet).

git-svn-id: https://scikit-learn.svn.sourceforge.net/svnroot/scikit-learn/trunk@717 22fbfee3-77ab-4535-9bad-27d1bd3bc7d8