dd → a_util Relation

File in include/ddl/dd	Includes file in include/a_util
dd_common_types.h	preprocessor / deprecated.h
dd_predefined_datatypes.h	preprocessor / detail / disable_warnings.h
ddcompare.h	result.h
ddfile.h	base / enums.h
datamodel / xml_datamodel.h	base / enums.h