box-layout: Fix (legacy) expand/fill properties
box-layout: Fix (legacy) expand/fill properties

Whether a child should receive extra space should be determined
by the expand property, not [xy]_fill (which just determine how
additional space should be used). The behavior is already correct
when using the ClutterActor:[xy]_expand properties, but needs
fixing for the corresponding ClutterBoxLayoutChild property.

https://bugzilla.gnome.org/show_bug.cgi?id=703809

GNOME/clutter,GNOME/clutter,Distrotech/clutter,Distrotech/clutter,ebassi/clutter,ebassi/clutter,jigpu/clutter,djdeath/clutter,Distrotech/clutter,djdeath/clutter,ebassi/clutter,djdeath/clutter,GNOME/clutter,GNOME/clutter,Distrotech/clutter,djdeath/clutter,jigpu/clutter,ebassi/clutter,djdeath/clutter,jigpu/clutter,Distrotech/clutter,djdeath/clutter,jigpu/clutter,ebassi/clutter,GNOME/clutter,jigpu/clutter,jigpu/clutter,Distrotech/clutter