Hi all. This issue is for VS 2013 support.

I've got a client who has a number of 3rd party libraries that only compile under VS 2013. This is a continuation of #56. There are some additional notes there.

Here's a gist of the build errors I get when building with --msvs_version=2013: https://gist.github.com/mateodelnorte/7ea8c72e3b2b664ba37da7a0e6ed6dd8.

Thx