Emit G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED when metadata are changed
GFileMonitor
should emit G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED
also for metadata changes. See !84 (merged) which adds AttributeChanged
signal for org.gtk.vfs.Metadata
DBus interface. GObject signal should be probably emitted from the GVfs
instance in such case and have each GLocalFileMonitor
subscribe to it. Just there were some worries that such change can be problematic for backward compatibility, so maybe we should add some special GFileMonitorFlags
for it, see !84 (comment 791014).