.loc = to forceMove() (#4937)

As requested, this PR is changed to only include all .loc = to forceMove() changes.

code/modules/integrated_electronics/core/assemblies.dm

@@ -278,8 +278,7 @@
 			return FALSE
 
 		var/obj/item/weapon/cell/device/cell = I
-		user.drop_item(cell)
-		cell.forceMove(src)
+		user.drop_from_inventory(cell,src)
 		battery = cell
 		playsound(get_turf(src), 'sound/items/Deconstruct.ogg', 50, 1)
 		to_chat(user, "<span class='notice'>You slot \the [cell] inside \the [src]'s power supply.</span>")

code/modules/integrated_electronics/core/integrated_circuit.dm

@@ -262,7 +262,7 @@ a creative player the means to solve many problems.  Circuits are held inside an
 		if(!circuit)
 			return
 		circuit.loc = null
-		circuit.loc = assy
+		circuit.forceMove(assy)
 		. = 1
 		update_to_assembly = 1
 

code/modules/integrated_electronics/subtypes/insert_slot.dm

@@ -41,8 +41,7 @@
 			to_chat(user, "<span class='warning'>\The [src] is too full to add [O].</span>")
 			return FALSE
 		items_contained += O
-		user.drop_item(O)
-		O.forceMove(src)
+		user.drop_from_inventory(O,src)
 		to_chat(user, "<span class='notice'>You add [O] to \the [src].</span>")
 		set_pin_data(IC_OUTPUT, 1, TRUE)
 		return TRUE

code/modules/integrated_electronics/subtypes/manipulation.dm

@@ -34,10 +34,9 @@
 		if(installed_gun)
 			user << "<span class='warning'>There's already a weapon installed.</span>"
 			return
-		user.drop_from_inventory(gun)
+		user.drop_from_inventory(gun,src)
 		installed_gun = gun
 		size += gun.w_class
-		gun.forceMove(src)
 		user << "<span class='notice'>You slide \the [gun] into the firing mechanism.</span>"
 		playsound(src.loc, 'sound/items/Crowbar.ogg', 50, 1)
 	else