Added Plane.Distance
Added Plane.GetIntersection
Fix RealTimeSince equality warnings
Add BBox.AddPoint
Added Physics.GetEntitiesInBox
Add Frustum class
Plane cleanup
Swap frustum plane order to match engine
Add Plane.GetDistance( Vector3 point )
Add plane.SnapToPlane( Vector3 point )
Add Plane.IsInFront( Vector3 point ) and plane.IsInFront( BBox box )
Merge branch 'master' of sbox