function.c (temp_slots_at_level, [...]): Use VEC instead of VARRAY.

function.c (temp_slots_at_level, [...]): Use VEC instead of VARRAY.

	* function.c (temp_slots_at_level, max_slot_level): Use VEC
	instead of VARRAY.
	* function.h (temp_slot_p): New.
	(function): Change the type of x_used_temp_slots to
	VEC(temp_slot_p,gc) *.

From-SVN: r113029