[libvirt] Man page patch for BZ 548485

[David Jorm]

See https://bugzilla.redhat.com/show_bug.cgi?id=548485

git diff for the patch:

---SNIP---

--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -342,7 +342,9 @@ severed upon restore, as TCP timeouts may have expired.
 
 =item B<schedinfo> optional I<--weight> B<number> optional I<--cap> B<number> I<domain-id>
 
-Allows to show (and set) the domain scheduler parameters.
+Allows you to show (and set) the domain scheduler parameters.
+
+B<Note>: The only parameter currently available for all schedulers is cpu_shares. It has a valid value range of 0-262144.
 
 B<Note>: The weight and cap parameters are defined only for the
 XEN_CREDIT scheduler and are now I<DEPRECATED>.

---SNIP---

I hope that's right, I found that BZ a bit confusing to comprehend. Learning curve.

David