Conflicts:
- d3d8_gl.c, xgpu.h: upstream's own snapshot ring for the visibility
counters left out for ours (host_gl_counters_snapshot, the same idea,
tried on both headsets, which also halves multiview's counts; its copy
already has the memory barrier upstream added); both declarations kept.
- rasterizer_xbox.c: the mirrored skinning's winding and upstream's
many-node matrices, both.
- main.c, network_server_manager.c: both (bots' machines and a lone host
may count down).
- android_build.py: the OpenXR loader and upstream's SDL mouse patch
(another SDL file than ours), both.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
