AtkWrapper: implement g_cond_wait
AtkWrapper: implement g_cond_wait

Removing this just meant that the a11y wrapper got bypassed so
it needs to be there

Bug: https://bugzilla.gnome.org/show_bug.cgi?id=742157

thisMagpie/java-atk-wrapper,GNOME/java-atk-wrapper,thisMagpie/java-atk-wrapper,GNOME/java-atk-wrapper,thisMagpie/java-atk-wrapper,GNOME/java-atk-wrapper