Handin.mac - turn in items or plat/gold/silver/copper to an NPC macro

| Example Uses:
| /macro handin.mac "gp" 2 destroy
| - Hands in 2 gold and destroys items you get.
|
| /macro handin.mac "Batwings" 3
| - Hands in 3 Batwings and keeps the items you get.