1/2 WGL: remove the pixel format limitation (!)

[Roderick Colenbrander]

Hi,

This patch lifts the pixel format limitation from WGL. It fixes apps that are picky about the pixel format and won't run now, it will allow more 3d features (e.g. multisampling, stereo and srgb) and it can offer more performance.

The patch only adds formats for which the depth of the main visual matches the depth of the format itself in order to prevent BadMatch issues in case of child window rendering. In general this only 'eats' away a handful ARGB visuals on nvidia hardware (they duplicate most RGB formats as ARGB but we don't have a need for it yet).

WineD3D has some small issues due to this change but those should be investigated by Stefan, Chris, me and others. The code should get a lot of testing as soon as possible.

Regards,
Roderick Colenbrander
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