Log Message:
Update at-spi2-atk to 2.10.2

* Fix atk_component_contains wrapper (BGO#710730).
* Properly clean up when timing out when motifying keystroke listeners
  (BGO#707218).
* Allow lists of attribute values when reading collection match rules
  (BGO#700865).
* Implement GetStringAtOffset (BGO#705581).
* Fix another crash when we're initialized and shut down repeatedly.
* Fix a deadlock for apps that also register AT-SPI key event listeners
  (ie, the Orca preferences dialog works again).
* Fix for BGO#681276 (reentrancy issues with gnome-shell).
* Fix various DBusError leaks (BGO#698951).
* Fix crash when a main loop is shut down repeatedly (BGO#699554).
* Suppress a warning if an app returns NULL when referencing a child.