[FFe] Update libvirt to 0.6.1

From the upstream NEWS file:

0.6.1: Mar 3 2009:
   - New features: new APIs for Node device detach reattach and reset
          (Mark McLoughlin), sVirt mandatory access control support (James
          Morris and Dan Walsh)
   - Portability: non gcc toolchain (John Levon), gcc-4.4 warnings fixes
          (Mark McLoughlin), fix build without LXC and QEmu (Jim Meyering)
   - Documentation: man page bugzilla URL (Mark McLoughlin), typo
          in domain format (Jesse Farinacci), clock offset fix (Mark
          McLoughlin), hostdev description typo (Mark McLoughlin), static
          host IP (Charles Duffy), new example program (David Allan)
   - Bug fixes: NULL dereference in LXC (Jim Meyering), fix domain
          error reporting (John Levon), fix loop of libvirtd --timeout
          (Daniel Berrange), limit history to 500 to restrict virsh memory
          (Daniel Berrange), wrong lvm volume format check (Cole Robinson),
          I/O error in daemon and associated remote acces crash (Daniel
          Berrange), fix autostart of session daemon (Daniel Berrange),
          restart guest on qemu migration failures (Chris Lalancette),
          config parsing leaks (Ryota Ozaki), DBus multithreading activation
          to avoid crashes (Daniel Berrange), mark defined network descriptions
          as persistent (Cole Robinson), qemu+tls handshake negotiation hang
          (Chris Lalancette)
   - Improvements: don't hardcode ssh port (Guido G<FC>nther), new test
          cases and testing infrastructure (Jim Meyering), improve the
          SExpr parser (John Levon), proper error reporting on xend
          shutdown command (John Levon), proper handling of errors when
          saving QEmu domains state (Guido G<FC>nther), revamp of the internal
          error memory APIs (John Levon), better virsh error reporting (John
          Levon), more daemon options to allow running multiple daemons (Jim
          Meyering), error handling when creating a QEmu domain (Guido G<FC>nther),
          fix timeouts in QEmu log reading (Guido G<FC>nther), migration with
          xend 3.3 fixes (John Levon), virsh XML dump flags cleanup (Cole
          Robinson), fix build with loadable drivers (Maximilian Wilhelm),
          internal XML APIs to read long long and hexa values (Mark
          McLoughlin), function to parse node device XML descriptions and
          associated test (Mark McLoughlin), generate network bridge names if
          not provided (Cole Robinson), recognize ejectable media in hostdev
          hal driver (Cole Robinson), integration of sVirt (Daniel Berrange)
   - Cleanups: printf NULL string checks (John Levon), remove uses of
          strerror and use virStrerror (Jim Meyering), remove redundant NULL
          assignments (Jim Meyering), QEmu driver logging and exec cleanups
          (Jim Meyering), many error handling cleanups (Jim Meyering), XML
          module cleanups (Mark McLoughlin), compiler warning (Maximilian
          Wilhelm), daemon TCP listen cleanup (Cole Robinson), size_t type
          cleanup (Guido G<FC>nther), parallel make fix (Michael Marineau),
          storage error diagnostic fix (Ryota Ozaki), remove redundant monitor
          watch variable (Cole Robinson), qemu AttachDevice error report
          improvement (Cole Robinson), virsh output cleanup (Jim Meyering),
          various tests cleanups and improvements (Jim Meyering), fix the
          internal export list with new APIs (Daniel Berrange), cleanups on
          new APIs for Node device (Daniel Berrange)