Declaration type names prefer unqualified names whereas reference type
names prefer fully qualified names.

This makes C++ code use fully qualified names when referencing a type,
fixing cases where types from other namespaces are used. It also allows
to skip the enum / struct / union type prefix in WinRT C++ code.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>