Increase max ammo for RCD, allow RCD to be loaded

with glass, metal, and plasteel, allow RCD to build
and deconstruct grilles and windows, add three RCDs
to the Engi-Vend machine

code/game/objects/structures/window.dm

@@ -258,6 +258,8 @@
 			disassembled = 1
 			user << "<span class='notice'> You successfully disassemble [src].</span>"
 			qdel(src)
+	else if(istype(I, /obj/item/weapon/rcd)) //Do not attack the window if the user is holding an RCD
+		return
 
 	else
 		if(I.damtype == BRUTE || I.damtype == BURN)