A description of the approach taken
Un-assigning me, as I will have to re-install the one machine I was able to make progress on before considering another try.
As per the mailing list discussion, we should rename the current project files and keep them around for the time being. That way, we don't exclude people who can't upgrade to VS 2015 yet.
I'll create a pull request with the converted project files.
I filled #873 for this.
Resolved via PR 873
I wrote about the final solution on my blog