This is a small patch for Visual Studio.

Here's some minor updates to get the Visual Studio build back online.

Nothing major.  Just moved some things around.

utils_common.h is the top most include.  So, I just put the windows.h include in there for now.  It might not be the best thing, however, it works.

I still support idea of adding a precompiled header to the project.  Like utils_pch.h and utils_pch.cpp or something.  Then, we could put windows.h, the OpenGL header includes, and the SDL header includes in there (and probably some other things too).

Have a good one.