Adding descriptions for atspi-relation.
Adding descriptions for atspi-relation.

GNOME/at-spi2-core,gloob/gloob-s-at-spi2-core,gloob/gloob-s-at-spi2-core,gloob/gloob-s-at-spi2-core,GNOME/at-spi2-core,GNOME/at-spi2-core