To bootstrap this tricky refactoring, initially a bridge definition
was used, with a variadic argument pack, but delegating to the old
non-variadic type sequence and from there further into LISP style
list processing of types and meta definitions, as pioneered by the
Loki libarary. Luimiera uses this technique since a long time to
perform the complex tasks sometimes required for code generation
and generic function and type adaptation.
with this changeset, a direct variadics based entrance into
type list processing is provided, so that the old definition
is now completely separate and can be removed eventually.