FastDiv bugfix, faster sampling kernel + misc optimisations, x64 compile warning and win32 compile warning fixed
FastDiv bugfix, faster sampling kernel + misc optimisations, x64 compile warning and win32 compile warning fixed

pixelmager/BlueNoiseGenerator,pixelmager/BlueNoiseGenerator,bartwronski/BlueNoiseGenerator,bartwronski/BlueNoiseGenerator,bartwronski/BlueNoiseGenerator,pixelmager/BlueNoiseGenerator