add appstream-glib dependency
appdata.its, needed to extract all the strings of appdata xml file, is actively maintained in appstream-glib.
Fix issue #439 (closed).
Closes #439 (closed)
Edited by Federico Bruni
appdata.its, needed to extract all the strings of appdata xml file, is actively maintained in appstream-glib.
Fix issue #439 (closed).
Closes #439 (closed)