SSE-optimize AABB::ProjectToAxis().
SSE-optimize scalar Abs().
Optimize Triangle::Intersects(AABB) from 111.056 ticks per call to 49.816 ticks per call on random inputs.
Migrate allzero_ps(x) from OBB.cpp to simd.h.
SSE-optimize Triangle::Intersects(AABB) from scalar 46.496 ticks per test to SSE 21.664 ticks per test.
Optimize AABB::Contains(AABB) from scalar 10.856 ticks per test to SSE 6.584 ticks per test on random input. Simplify AABB:Contains(point) with the use of allzero_ps().
Optimize AABB::Contains(LineSegment), AABB::Contains(Sphere), AABB::Contains(Triangle)
Optimize Triangle::BoundingAABB().
Fix issues in AABB::Enclose(Sphere) and AABB::Enclose(Capsule) when vec==float4, which could destroy the w component of the AABB corner points.