C++ qualified method names

[Eli Zaretskii]

In the C++ method below:

  void
  regcache::raw_supply_integer (int foo)
  {
    whatever (foo);
  }

invoking "M-: (c-defun-name) RET" produces "raw_supply_integer".  Why
does it exclude the class qualification?  Is there a way to have that
included?  This is important e.g. when producing a ChangeLog entry for
such methods.