Updated the compiler detection and correction portions of CMake and generated include file to better handle the multitude of MS Visual Studio compilers.
Visual Studio 2013 gives different answer than previous versions for the cube root of pi.
Visual Studio 2012 & 2013 32-bit builds give a very different answer for a float test.
Fixed test errors for win32 builds of VS 2012 & VS 2013.
Visual Studio 2013 had differences slightly larger for 32-bit build in release.
Merge branch 'feature/Better_MS_Visual_Studio_Support' into develop