This namespace is for things the developer will not get in touch with
(normally) but the vendor might need to use for specialization of the
interpreter.
This separation is not fully completed yet, some changes will have to
follow...
Moved member template into name class to utilize the fact the class
aliases are really just aliases.
This makes the code leaner in many cases and less complex for the compiler
(I guess). It also has the benefit, that the field name is available as
string in the result_rows. This might be useful for debugging one day.
