Spent lots of time and lots of changes to fix issues:
bugfix: "Mechs no longer runtime during destroy call."
bugfix: "Turrets and NPCS no longer target empty mechs."
bugfix: "Mechs no longer runtime during armor check. Mechs now use their armor and values for it. Before it would ignore them entirely and deal 100% damage."
Added ismech() define and also QDEL_NULL_LIST() define from TG. Matt's suggestion
renamed any armour references in mech code to armor to keep it consistent