Unanchored stools and chairs

Players can still anchor/unanchor stools, chairs and beds with screwdrivers

code/defines/obj.dm

@@ -759,7 +759,6 @@
 	desc = "Apply butt."
 	icon = 'objects.dmi'
 	icon_state = "stool"
-	anchored = 1.0
 	flags = FPRINT
 	pressure_resistance = 3*ONE_ATMOSPHERE
 
@@ -768,6 +767,7 @@
 	desc = "This is used to lie in, sleep in or strap on."
 	icon_state = "bed"
 	var/mob/living/buckled_mob
+	anchored = 1.0
 
 /obj/structure/stool/bed/alien
 	name = "Resting contraption"
@@ -779,6 +779,7 @@
 	name = "chair"
 	desc = "You sit in this. Either by will or force."
 	icon_state = "chair"
+	anchored = 0
 
 /obj/structure/stool/bed/chair/comfy
 	name = "comfy chair"

code/game/objects/stool.dm

@@ -19,6 +19,13 @@
 		del(src)
 
 /obj/structure/stool/attackby(obj/item/weapon/W as obj, mob/user as mob)
+	if(istype(W, /obj/item/weapon/screwdriver))
+		if (src.anchored)
+			src.anchored = 0
+			user << "/blue You unfasten [src] from the floor."
+		else
+			src.anchored = 1
+			user << "/blue You fasten [src] to the floor."			
 	if(istype(W, /obj/item/weapon/wrench))
 		playsound(src.loc, 'Ratchet.ogg', 50, 1)
 		new /obj/item/stack/sheet/metal(src.loc)