Broken NVI support

[Simen Kjaeraas]

On Mon, 13 Aug 2012 20:48:07 +0200, Maxim Fomin <maxim at maxim-fomin.ru>  
wrote:

> Hello.
> Please, put attention to following non-runnable due to linker errors  
> sample http://dpaste.dzfl.pl/cad4b558.

As Era pointed out, private functions in D are implicitly final, i.e.
not overridable. Change all instances of 'private' to 'protected',
and Bob is your proverbial uncle.

-- 
Simen