This is exceedingly minimal quark4 support for the new entities in
the Portal of Praevus Mission Pack - almost nothing beyond their
names and spawnflags, and new spawnflags for old entities are
also not covered.

But the unsupported stuff can be supplied by hand on the basis of
the information in the Eye of Horus (http://www.hexenworld.com/h2entities),
and good PoP support is planned for Quark 5, which will soon be out
of beta.
