xen: security and bugfix update (important)

XEN was updated to fix various bugs and security issues.

Security issues fixed:

• bnc#897657 - CVE-2014-7188: XSA-108 Improper MSR range used for x2APIC
  emulation
• bnc#895802 - CVE-2014-7156: XSA-106: Missing privilege level checks in
  x86 emulation of software interrupts
• bnc#895799 - CVE-2014-7155: XSA-105: Missing privilege level checks in
  x86 HLT, LGDT, LIDT, and LMSW emulation
• bnc#895798 - CVE-2014-7154: XSA-104: Race condition in
  HVMOP_track_dirty_vram
• bnc#864801 - CVE-2013-4540: qemu: zaurus: buffer overrun on invalid
  state load
• bnc#880751 - CVE-2014-4021: XSA-100: Hypervisor heap contents leaked to
  guests
• bnc#878841 - CVE-2014-3967,CVE-2014-3968: XSA-96: Vulnerabilities in HVM
  MSI injection
• bnc#867910 - CVE-2014-2599: XSA-89: HVMOP_set_mem_access is not
  preemptible
• bnc#842006 - CVE-2013-4344: XSA-65: xen: qemu SCSI REPORT LUNS buffer
  overflow

Other bugs fixed:

• bnc#896023 - Adjust xentop column layout
• bnc#891539 - xend: fix netif convertToDeviceNumber for running domains
• bnc#820873 - The "long" option doesn’t work with "xl list"
• bnc#881900 - XEN kernel panic do_device_not_available()
• bnc#833483 - Boot Failure with xen kernel in UEFI mode with error "No
  memory for trampoline"
• bnc#862608 - SLES 11 SP3 vm-install should get RHEL 7 support when
  released
• bnc#858178 - [HP HPS Bug]: SLES11sp3 XEN kiso version cause softlockup
  on 8 blades npar(480 cpu)
• bnc#865682 - Local attach support for PHY backends using scripts
• bnc#798770 - Improve multipath support for npiv devices