Particle edit: Initial support of edit with copy-on-write

The idea is that edit mode structure is owned by original object,
and used for drawing. This is a bit confusing, especially since
path cache is also in that structure and needs evaluated object
to calculate cache.

In the future we should split edit data from visualization data,
but that's bigger refactor.

source/blender/editors/physics/particle_object.c

@@ -946,7 +946,7 @@ static void copy_particle_edit(
 		
 		pa++;
 	}
-	update_world_cos(ob, edit);
+	update_world_cos(depsgraph, ob, edit);
 	
 	UI_GetThemeColor3ubv(TH_EDGE_SELECT, edit->sel_col);
 	UI_GetThemeColor3ubv(TH_WIRE, edit->nosel_col);