Ports move force and move resist, movement/pushing/pulling tweaks & co.

code/modules/mob/mob_movement.dm

@@ -108,8 +108,7 @@
 
 	if((direct & (direct - 1)) && mob.loc == n) //moved diagonally successfully
 		add_delay *= 2
-	if(mob.loc != oldloc)
-		move_delay += add_delay
+	move_delay += add_delay
 	if(.) // If mob is null here, we deserve the runtime
 		if(mob.throwing)
 			mob.throwing.finalize(FALSE)