urbi: use hasLocalSlot.
urbi: use hasLocalSlot.

	* src/libuobject/uobject.cc (UObject::USetUpdate): Prefer
	hasLocalSlot to "in slotNames".

aldebaran/urbi,aldebaran/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi