qemu-kvm security, bug fix, and enhancement update

1.5.3-156.el7 - kvm-vnc-Fix-qemu-crashed-when-vnc-client-disconnect-sudd.patch bz1527405 - kvm-fix-full-frame-updates-for-VNC-clients.patch bz1527405 - kvm-vnc-update-fix.patch bz1527405 - kvm-vnc-return-directly-if-no-vnc-client-connected.patch bz1527405 - kvm-buffer-add-buffermoveempty.patch...