Adds oxyacetylene welding and cutting torch.

Can be used to repair, install parts into, and cut apart vehicles; this
requires goggles. Can be used to destroy some types of terrain and
furniture; this also requires goggles. Can be used in some crafting
recipes in place of an electric welder and in place of a forge in some
others. Cannot be used to repair items. Cannot be reloaded.
$0.20 for a full one, or is that price-per-charge or something?