Core/Node: Refactor interface

- Removed overloads taking multiple scalars
- Removed CoordSys parameter (functions exists in two sets, local and global)

src/Nazara/Renderer/DebugDrawer.cpp

@@ -100,7 +100,7 @@ namespace Nz
 			const Joint* joint = skeleton.GetJoint(i);
 			const Node* parent = joint->GetParent();
 			if (parent)
-				DrawLine(joint->GetPosition(CoordSys::Global), parent->GetPosition(CoordSys::Global), color);
+				DrawLine(joint->GetGlobalPosition(), parent->GetGlobalPosition(), color);
 		}
 	}