d3d10umd: Allow naming d3d10umd DLLs
This patches split from !24223. read more about split
For graphics drivers on windows it is beneficial to have usermode DLLs names matching driver overall name, example being vm3dum_10.dll and nvwgf2um.dll for d3d10 usermode drivers from VMWare and Nvidia. To facilitate that, as discussed there:
- Introduce new option
gallium-d3d10-dll-name
that names d3d10 target. - Rename
gallium-windows-dll-name
togallium-wgl-dll-name
for wgl target to avoid confusion.
Additionally as d3d10sw target could support other targets than software ones (like one in !24223) it was renamed to match frontend name d3d10umd