patch for arla-0.41 on OpenBSD-3.8

[Hugo Meiland]

>>Due to e.g. dropping of UNION support in OpenBSD 3.8, arla-0.41
>>wouldn't build on this system; the following patch should fix this....
>>
> 
> Great! I added the fs change and a slightly modified version of the mount
> part to cvs HEAD, can you see if it works? Is this enough for Arla to be
> fully functional on modern OpenBSD?

Yep...this is it :-) , builds great on OpenBSD-3.8-release
thanks for accepting the patch...

Hugo Meiland