* dtIntersectSegSeg2D: Calculate over zy-plane instead.
* dtOverlapPolyPoly2D: Calculate over zy-plane instead.
* dtNavMeshQuery::findRandomPoint: z = h.
* dtNavMeshQuery::raycast: Invert hit normals.
* Update all comments to use xyz vector instead (previously xzy (xz-plane z-height)).
Member 'filter' has been moved out of 'dtNavMeshQuery::dtQueryData'. New offset = 0x60 (after m_openList). Renamed to 'm_queryFilter' to maintain consistency.