[klibc] Support JFS in fstype

[H. Peter Anvin]

Jeff Bailey wrote:
> Here's a patch to support JFS in fstype.
> 
> Given that this runs as root, would you consider a patch to take the
> device as an argument rather than stdin?  I get really nervous that one
> of these days I'm going to > rather than <.
> 

Sure.  Actually, it should probably do either.

> But otherwise... =)  Tested against 1.0.14, but there's nothing in there
> that should keep it from applying against current git that I can see.

Thanks :)

	-hpa