Add support for GalliumNine

[shanefagan]

Rationale

GalliumNine gives good performance for the games that work and for the drivers that support it. Allowing users to leverage that power is a big win for performance. (I know not a Steam game but it gives a good indication of performance) SC2 goes from 100 FPS on my radeon RX480 to 300 fps ish with GalliumNine.

Implementation

The patch is already available on Github to add the functionality to WINE, the only problem is how it is implemented in the config really and making sure failover works correctly.

[Elkasitu]

Duplicate of #66

[nstgc]

For what its worth: https://www.phoronix.com/scan.php?page=news_item&px=Wine-D3D9-Gallium-Nine-Opposed

Also, remember as you read that, that ValvE has hired someone (or someoneS) to work on Mesa.

Also: https://github.com/disks86/VK9

I'm very much of the opinion that its better to do it right the first time. VK9 will be a thing. This isn't like "native or nothing" where we can say "a wrapper is good enough" because native may never happen. VK9 will happen.

[shanefagan]

Yeah fair enough, if VK9 is how they sort it then cool, actually for SC2 it would probably be better than GalliumNine anyway, just I was favouring something that could have been an answer right now over something that would be an answer in a year.