More billing_types in BILL_TYPE.
Added CELL_AND_DOMAIN_AND_TYPE for REQUEST_ and REMOVES.
Added PNFSID_TSIZE_OR_ZERO for REQUEST_CLASSIC
Added REQUESTDN for REQUEST_CLASSIC and REMOVE_SRM
Added UNKNOWN_OR_SUNIT_OR_NOTHING for REQUEST_CLASSIC
Added REQUEST_CLASSIC, REQUEST_DCAP, REMOVE_ON_POOL, REMOVE_CLASSIC and REMOVE_SRM.