[virglrenderer-devel] second posting of capset upgrade

[Dave Airlie]

I've talked to Stephane and I think his idea to allow the
v2 capset to grow for ever is a good one, so we don't need to
expose a v3 ever. These 4 patches implement it, it's mainly
changes on the guest mesa to prefill the struct before asking
the kernel for the caps into it. It relies on the kernel
only copying the minimum size in and ignoring the rest.

I'll post these to individual projects next week.

Dave.