-- v2: windowscodecs: Implement IWICBitmapFlipRotator(WICBitmapTransformRotate90) for bitmaps with bpp >= 8. windowscodecs: Implement IWICBitmapFlipRotator(WICBitmapTransformFlipHorizontal) for bitmaps with bpp >= 8. windowscodecs/tests: Add some tests for IWICBitmapFlipRotator.