Add support for crafting recipes that output multiples of non-stacking items.

I would like see support added for crafting recipes that output multiple copies of non-stackable items. Not only would it eliminate the need for many awkward workarounds that modders are often currently forced to resort to, but also the fact that this type of recipe does not work is technically bug, as recipes of this nature appear in the official craftDB file of the core game.
For example the following is copied directly from Dungeons of Dredmor/game/craftDB.xml:

Code:

<craft>
    <output skill="1" name="Aluminum Tube" amount="1" />
    <output skill="3" name="Aluminum Tube" amount="2" />
    <output skill="5" name="Aluminum Tube" amount="3" />
    <tool tag="tinkerer" />
    <input name="Aluminum Ingot" />    
    </craft>

So if not for the sake of the modders, then add it because it's what you originally intended anyway.