Add CCode notify to known attrs
Add CCode notify to known attrs

GNOME/vala,spidermonkdust/vala,rvu95/vala,GNOME/vala,spidermonkdust/vala,frida/vala,rvu95/vala,rvu95/vala,frida/vala,frida/vala,GNOME/vala,frida/vala,GNOME/vala,frida/vala,spidermonkdust/vala