git: hammer2 - Add hammer2 boot support

[Sascha Wildner]

On Wed, 25 Sep 2013 00:30:51 +0200, Matthew Dillon  
<dillon at crater.dragonflybsd.org> wrote:

>
> commit cdfd0a3e265fcdd4e2200620157aaeebe6bfd8f8
> Author: Matthew Dillon <dillon at backplane.com>
> Date:   Tue Sep 24 15:14:26 2013 -0700
>
>     hammer2 - Add hammer2 boot support

It looks like sys/vfs/hammer2/hammer_disk.h was not committed and  
buildworld is now sad. :)

Sascha