While I'd like these to be opaque, The MT
engine unfortunately does not allow this
without introducing dark shadows inside the
node the fluid occupies, which is evident if
flowing opaque liquid is up against the side
of a container.
By restricting the recipes we check based
on the name of the central object being
checked, we can do many fewer craft
checks per item and avoid expensive
checks.
Register a "rootmatch" property for all
recipes that represents a broader, quicker
test for recipe eligibility. False positives are
allowed but false negatives are not.
Since most recipes are eligible, we can
use this to build an index for fast lookups
of subsets of recipes to run and skip most
of the other ones.
When 3rd-party mods try to register extensions, don't
crash on trying to register in wrong namespace.
Keep registrations to original mod namespace for now,
as I'm not certain whether I actually made assumptions
about mod name in some logic.
