libvirt security, bug fix, and enhancement update

[0.8.2-22.0.1.el5]

• Replaced docs/et.png in tarball
  [libvirt-0.8.2-22.el5]
• Fix auditing of disk hotunplug operations (rhbz#710151)
  [libvirt-0.8.2-21.el5]
• remote: Protect against integer overflow (rhbz#717207)
  [0.8.2-20.el5]
• Support enabling or disabling the HPET for Xen domains (rhbz#703193)
• SMBIOS support (rhbz#661365)
  [0.8.2-19.el5]
• xen: Plug memory leak in multiple serial ports support (rhbz#670789)
• Manually kill gzip if restore fails before starting qemu (rhbz#681623)
• qemu: Avoid double close on domain restore (rhbz#681623)
• virterror: Avoid API breakage with vmware (rhbz#665075)
• nwfilter: Resolve deadlock between VM ops and filter update (rhbz#697749)
  [0.8.2-18.el5]
• xen: Prevent updating device when attaching a device (rhbz#662908)
• Add PCI sysfs reset access (rhbz#689880)
• xencapstest: Don’t fail when Xen is installed (rhbz#690459)
• Make error reporting in libvirtd thread safe (rhbz#690733)
  [0.8.2-17.el5]
• Fix event-handling data race (rhbz#671569)
• Add support for multiple serial ports into the Xen driver (rhbz#670789)
• Add missing checks for read only connections (CVE-2011-1146)
• Guess rhel macro based on dist macro (rhbz#665325)
  [0.8.2-16.el5]
• Fix possible crash in virExec (rhbz#665549)