Properly read the mesh from LUA.

Players can now be set to meshes using the following test script:

function switch_player_visual()
		prop = {
			mesh="player.obj",
			texture="player.png",
			visual="mesh",
		}
	for _, obj in pairs(minetest.get_connected_players()) do
		obj:set_properties(prop)
	end
	minetest.after(1.0, switch_player_visual)
end
minetest.after(1.0, switch_player_visual)

src/scriptapi.cpp

@@ -936,6 +936,9 @@ static void read_object_properties(lua_State *L, int index,
 	lua_pop(L, 1);
 
 	getstringfield(L, -1, "visual", prop->visual);
+
+	getstringfield(L, -1, "mesh", prop->mesh);
+	getstringfield(L, -1, "texture", prop->texture);
 	
 	lua_getfield(L, -1, "visual_size");
 	if(lua_istable(L, -1))