Fixes for gripper interaction with frame parts and mecha equipment (#5025)

* possible fix

* truly a fix

* return of the lost comment

* and lost slash too

* stray not-my comment deleted

* added proper changelog

* replaced << with to_chat()

code/modules/mob/living/silicon/robot/drone/drone_items.dm

@@ -199,6 +199,21 @@
 	wrapped = null
 	//update_icon()
 
+/obj/item/weapon/gripper/proc/drop_item_nm()
+
+	if(!wrapped)
+		for(var/obj/item/thing in src.contents)
+			thing.loc = get_turf(src)
+		return
+
+	if(wrapped.loc != src)
+		wrapped = null
+		return
+
+	wrapped.loc = get_turf(src)
+	wrapped = null
+	//update_icon()
+
 /obj/item/weapon/gripper/attack(mob/living/carbon/M as mob, mob/living/carbon/user as mob)
 	if(wrapped) 	//The force of the wrapped obj gets set to zero during the attack() and afterattack().
 		force_holder = wrapped.force

code/modules/mob/living/silicon/robot/robot.dm

@@ -1104,4 +1104,10 @@
 		return
 
 /mob/living/silicon/robot/is_sentient()
-	return braintype != "Drone"
+	return braintype != "Drone"
+
+
+/mob/living/silicon/robot/drop_item()
+	if(module_active && istype(module_active,/obj/item/weapon/gripper))
+		var/obj/item/weapon/gripper/G = module_active
+		G.drop_item_nm()