This is the set of constants used to identify the classes
that are used in NodeFactoryImpl.
This class is not shipped. The names are used in
NodeFactoryImpl, mapped from int NodeTypes and used in
Class.forName calls.
WARNING: WHEN ADDING NODE TYPES HERE, YOU MUST ALSO ADD
THEM TO $WS/tools/release/config/dbms/cloudscapenodes.properties
author: ames