Security update for qemu (important)

This update fixes the following security issues:

• Enforce receive packet size, thus eliminating buffer overflow and
  potential security issue. (bsc#957162 CVE-2015-7512)
• Infinite loop in processing command block list. CVE-2015-8345
  (bsc#956829):

This update also fixes a non-security bug:

• Due to space restrictions in limited bios data areas, don’t create
  mptable if vcpu count is "high" (ie more than ~19). (bsc#954864) (No
  supported guests are negatively impacted by this change, which is taken
  from upstream seabios)

This update was imported from the SUSE:SLE-12-SP1:Update update project.