Playstation 2 Dithering test added

[Maximus32]

While trying out the different screen modes of the PS2, I found an option for hardware dithering. This dithering can be used to improve the image quality when using 16bit color depth (the only depth avalable in the high resolution modes).

The results are truely amazing. The 16bit dithered image looks almost as good as the 24/32bit versions. So I added a few downloads to the download section:
- a PAL/NTSC version (Everyone with a PS2 should be able to use this)
- a Full HD 1080i version. Please note that it is really 1920x1080 pixels. No cropping and no stretching.
- an SXGA (1280x1024) version. Same here: No cropping and no stretching.