Get Visual Studio projects compiling again [CR]

Had to do the following changes:
* Add missing files to the project so they get compiled
* Had to fix ambiguous calls to math functions that were being called with ints, but the functions had both float and double variants.
* Added all the SDL libs required to compile the SDL config. I made these match the names of the libs as they are in the actual VC redist that is on the SDL website. I don't know what "libSDL.dll.lib" was that was already in the project, but that file is not in the official SDL redist. Perhaps it was a single combined lib built by someone locally?