[libvirt] [PATCH] docs: document freecell --all

[Eric Blake]

Based on a smaller patch developed by Moritoshi Oshiro:
https://bugzilla.redhat.com/show_bug.cgi?id=693963

* tools/virsh.pod (freecell): Mention all, and clarify that
optional cellno requires --cellno.
---

I think this is the first case where virsh.pod is trying to convey
mutually exclusive options; does the resulting layout look
reasonable?

 tools/virsh.pod |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/virsh.pod b/tools/virsh.pod
index f4bd294..2e98d5b 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -314,10 +314,11 @@ crashed.

 =back

-=item B<freecell> optional I<cellno>
+=item B<freecell> optional { I<--cellno> B<cellno> | I<--all> }

 Prints the available amount of memory on the machine or within a
-NUMA cell if I<cellno> is provided.
+NUMA cell if I<cellno> is provided.  If I<--all> is provided instead
+of I<--cellno>, then show the information on all NUMA cells.

 =item B<cpu-baseline> I<FILE>

-- 
1.7.4