Without these components, src package creation fails in packaging.

Change-Id: I402c9c49642bccf821c3719206d1dea9415760c6
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Reviewed-by: Antti Kokko <antti.kokko@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>