qemu-kvm security and bug fix update

[1.5.3-126.el7_3.3]

• kvm-net-check-packet-payload-length.patch [bz#1398217]
• Resolves: bz#1398217
  (CVE-2016-2857 qemu-kvm: Qemu: net: out of bounds read in net_checksum_calculate() [rhel-7.3.z])
  [1.5.3-126.el7_3.2]
• kvm-virtio-introduce-virtqueue_unmap_sg.patch [bz#1393484]
• kvm-virtio-introduce-virtqueue_discard.patch [bz#1393484]
• kvm-virtio-decrement-vq-inuse-in-virtqueue_discard.patch [bz#1393484]
• kvm-balloon-fix-segfault-and-harden-the-stats-queue.patch [bz#1393484]
• kvm-virtio-balloon-discard-virtqueue-element-on-reset.patch [bz#1393484]
• kvm-virtio-zero-vq-inuse-in-virtio_reset.patch [bz#1393484]
• kvm-virtio-add-virtqueue_rewind.patch [bz#1393484]
• kvm-virtio-balloon-fix-stats-vq-migration.patch [bz#1393484]
• Resolves: bz#1393484
  ([RHEL7.3] KVM guest shuts itself down after 128th reboot)
  [1.5.3-126.el7_3.1]
• kvm-ide-fix-halted-IO-segfault-at-reset.patch [bz#1393042]
• kvm-hw-i386-regenerate-checked-in-AML-payload-RHEL-only.patch [bz#1392027]
• kvm-SPEC-file-flip-the-build-from-IASL-to-checked-in-AML.patch [bz#1392027]
• Resolves: bz#1392027
  (shutdown rhel 5.11 guest failed and stop at ‘system halted’)
• Resolves: bz#1393042
  (system_reset should clear pending request for error (IDE))