Log Message:
Update at-spi2-core from 2.3.5 -> 2.5.2

2.5.2:
* Fix a crash when a call to fetch a hyperlink times out.
* Fix C++ compilation.
* Remove a warning that was sometimes logged when a method call timed out.
* Fix crash in atspi_deregister_keystroke_listener (FDO#50578)

2.5.1:
* Add atspi_set_timeout.
* By default, disable method call timeouts until an application
  has been on the bus for 15 seconds (work-around for applications
  with potentially long start-up times). This behavior can be changed
  with a call to atspi_set_timeout.
* Fix GError sent when receiving a reply of the wrong type
* Fix typo in atspi_document_get_attribute_value
* Fix for bug 675004 - object:state-changed:defunct events are
  emitted as object:state-change:defunct

2.4.0:
* Fix typo in at-spi-dbus-bus.desktop.in (BGO#605662).

2.3.92:
* Some changes to try to prevent at-spi2-registryd from incorrectly
  thinking that an AT is hung and passing keys meant for it to the application.
* Fix crash fetching an error from a reply when retrieving a property.

2.3.91:
* Invalidate states when receiving a focus event (BGO#663992).
* Fix atspi_table_get_row_column_extents_at_index.
* Expect a signed int for GetIndexInParent, per the spec.
* Send key events to listeners assumed to be hung, but don't block.
* Reduce the method call timeout slightly, so that it will be lower than
  the keystroke listener timeout.
* Don't cache data for transient objects.
* Enable caching on a call to atspi_accessible_set_cache_mask, even if
  atspi-event_main() hasn't been called.

2.3.90:
* At-spi-bus-launcher now emits PropertiesChanged signals from the correct
  interface.
* If a keystroke listener does not respond, disable it until it responds.
  This prevents the desktop from locking up if an AT hangs or is suspended
  and has a keyboard listener registered.
* Fix a warning when a NULL object is returned as the detail of an event.