qemu-kvm security, bug fix, and enhancement update

1.5.3-141.el7 - kvm-Fix-memory-slot-page-alignment-logic-bug-1455745.patch bz1455745 - kvm-Do-not-hang-on-full-PTY.patch bz1452067 - kvm-serial-fixing-vmstate-for-save-restore.patch bz1452067 - kvm-serial-reinstate-watch-after-migration.patch bz1452067 -...