CentOS virt - Jun 2015 - XSAs 134, 135, and 136

Just to let people know what's going on:

The embargo for XSA-135 lifted today at 1400 UTC.  The embargoes for
XSAs 134 and 136 lift tomorrow at 1200 UTC.

XSA-135 only affects guests which have been assigned a PCNET emulated
NIC, which is not the default; as such, it doesn't seem terribly
urgent to push the fix today.

So rather than push one fix today and another tomorrow, our plan is
just to do a single update with all the XSAs tomorrow once the embago
lifts.

 -George