What's new in at-spi2-core 2.1.92:

* Fixed a crash when handling event listeners.

* Fix for BGO#659088: Correctly define ATSPI_MODIFIER_NUMLOCK.

* Add some defensive checks to prevent problems with defunct objects.

* BGO#657051: Fix a build error on Solaris.

* Fix some missing return statements.

* Some fixes related to deregistering event listeners.