main: Allow updating device axes from the current tool

This way devices are ensured the proper axis status at the time
of processing the events.

clutter/clutter/clutter-input-device.c

@@ -2052,3 +2052,17 @@ clutter_input_device_lookup_tool (ClutterInputDevice         *device,
 
   return NULL;
 }
+
+void
+clutter_input_device_update_from_tool (ClutterInputDevice     *device,
+                                       ClutterInputDeviceTool *tool)
+{
+  ClutterInputDeviceClass *device_class;
+
+  g_return_if_fail (CLUTTER_IS_INPUT_DEVICE (device));
+
+  device_class = CLUTTER_INPUT_DEVICE_GET_CLASS (device);
+
+  if (device_class->update_from_tool)
+    device_class->update_from_tool (device, tool);
+}