Fixed bug related to call number types.  Started writing
BuildSerialsData method.  Added a new instance of EntityManager to talk
to the olemigration database to LU_DBLoadInstances and renamed the other
one to ole_em, so now there's ole_em and migration_em.  I changed all
instances of the former "em" to "ole_em".  I added the
SerialsReceivingRecType class.