[libvirt] [libvirt-php] Add volume clone support

[Michal Novotny]

[snip]
> Hi Michal:
>
> Sorry about that, I didn't noticed the error handling mechanism in 
> libvirt before.
>
> I've been overloaded these days. And I'll resent those patches.
>
> t

Hi Lyre,
that's fine. Everybody is doing mistakes or overlooks something some
time.  Nothing happened, I just noticed you about this :) Please also
include v2 to the subject prefix, i.e. "[libvirt-php PATCH v2]" or
"[libvirt-php v2]" as the subject prefix. I prefer the word "PATCH" here
is was but it's not a big deal once there's "libvirt-php" in the subject
string - this is the most important thing for me :)

Have a great time,
Michal

-- 
Michal Novotny <minovotn at redhat.com>, RHCE
Virtualization Team (xen userspace), Red Hat