Message 243395 - Python tracker

There's an MSBuild property that I set for release builds (either BuildForRelease or ReleaseBuild, not Configuration) that should exclude the preprocessor directive so we don't include an unnecessary full path. I can make that change later if you don't want to hold this patch up any longer though, as the rest looks fine to me. I don't know enough about Tix to comment on Serhiy's point.