The xenstore database sometimes has stale domain IDs which are not
present in the hypervisor anymore. Filter these out to avoid causing
confusion

* src/xen/xs_internal.c: Filter domain IDs against HV's list
* src/xen/xen_hypervisor.h, src/xen/xen_hypervisor.c: Add new
  xenHypervisorHasDomain() method for checking ID validity

* src/Makefile.am, src/proxy_internal.c, src/proxy_internal.h
  src/sexpr.c, src/sexpr.h, src/xen_unified.c, src/xen_unified.h,
  src/xen_internal.c, src/xen_internal.h, src/xen_inotify.c,
  src/xen_inotify.h, src/xend_internal.c, src/xend_internal.h,
  src/xm_internal.c, src/xm_internal.h, src/xs_internal.c,
  src/xs_internal.h: Move to src/xen/ directory
* proxy/Makefile.am, proxy/libvirt_proxy.c, src/Makefile.am,
  src/libvirt.c, tests/sexpr2xmltest.c, tests/statstest.c,
  tests/xencapstest.c, tests/xmconfigtest.c, tests/xml2sexprtest.c:
  Adapt to changed xen location
* src/stats_linux.h, src/stats_linux.c: Remove xen specific block
  stats APIs
* src/qemu_driver.c, src/uml_driver.c: Add missing sys/un.h include
  uncovered after change to stats_linux.h
* src/xen/block_stats.h, src/xen/block_stats.c: Add xen specific
  block stats APIs

  and fix the indentation
daniel

Done using this command (also includes .c.in and .h.in files):
for i in $(g ls-files|grep -E '\.[ch](\.in)?$'|grep -v gnulib); do
  expand -i $i > j && mv j $i;done

	* src/libvirt.c and all internal driver interfaces: Parse the
	  URI only once and pass it to virDrvOpen instead of the
	  unparsed name string.

  src/qemu_driver.c src/remote_internal.c src/test.c
  src/xen_internal.[ch] src/xen_unified.c src/xend_internal.[ch]
  src/libvirt.c src/libvirt_sym.version: adding NUMA support patches
  from Beth Kon adding new virNodeGetCellsFreeMemory entry point
  and extending the virConnectGetCapabilities one. Fix a couple of
  issues in the patch and add to exported symbols from shared lib.
* docs/virsh.pod docs/virsh.1 src/virsh.c: added new command
  freecell to get the available memory on the node or in a NUMA cell.
* docs/*: updated and regenerated the documentation
Daniel

	* src/libvirt.c (virDomainBlockStats, virDomainInterfaceStats):
	  Added block device and network interface statistics.
	* src/xen_internal.c: Support for stats from Xen domains.
	* qemud/remote.c, qemud/remote_protocol.x, qemud/remote_internal.c:
	  Support for fetching device and network interface stats
	  across remote connections.
	* src/virsh.c: Added 'virsh domblkstat' and 'virsh domifstat'
	  commands to display stats.
	* docs/libvir.html, docs/hvsupport.html: Updated hvsupport
	  documentation.

	* src/proxy_internal.c, src/proxy_internal.h,
	  src.xen_internal.c, src/xen_internal.h,
	  src/xen_unified.c, src/xen_unified.h,
	  src/xend_internal.c, src/xend_internal.h,
	  src/xm_internal.c, src/xm_internal.h,
	  src/xs_internal.c, src/xs_internal.h: The interface
	  between xen_unified.c and its underlying driver now uses
	  a custom structure (struct xenUnifiedDriver) instead
	  of reusing virDriver.
	* src/xen_unified.c: virDomainLookup* functions in Xen
	  now throw VIR_ERR_NO_DOMAIN if the domain does not exist.
	* src/xs_internal.c: Fix indentation.

  src/driver.h src/libvirt.c src/libvirt_sym.version
  src/proxy_internal.c src/qemu_internal.c src/test.c
  src/virsh.c src/xen_internal.c src/xen_internal.h src/xen_unified.c
  src/xend_internal.c src/xm_internal.c src/xs_internal.c:
  Applied patches from Atsushi SAKAI to add the scheduler API,
  with patch from Rich Jones for error handing, and a number
  of cleanups and more error checking from me
Daniel

	* src/xen_unified.c et al: Unified Xen driver.  Architecture
	  described here:
	  https://www.redhat.com/archives/libvir-list/2007-March/msg00396.html

  proxy/libvirt_proxy.c qemud/Makefile.am qemud/conf.c qemud/conf.h
  qemud/dispatch.c qemud/internal.h qemud/protocol.h
  src/driver.h src/internal.h src/libvirt.c src/libvirt_sym.version
  src/proxy_internal.c src/proxy_internal.h src/qemu_internal.c
  src/test.c src/virsh.c src/virterror.c src/xen_internal.c
  src/xen_internal.h src/xend_internal.c src/xm_internal.c
  src/xml.h src/xs_internal.c: applied patch from Richard Jones
  adding virConnectGetCapabilities(), plus various small little
  fixes
* docs/*: fixed the api extractor script and regenerated
Daniel

  src/Makefile.am src/libvirt.c src/qemu_internal.c src/test.c
  src/xen_internal.c src/xen_internal.h src/xend_internal.c
  src/xm_internal.c src/xml.c src/xs_internal.c
  tests/Makefile.am tests/sexpr2xmltest.c tests/xmconfigtest.c:
  allow selective compilation of Xen,QEmu/KVM and test support
  in or out at configure time. Also allows to compile on a system
  without Xen development installed. All drivers are selected by
  default.
Daniel

  src/driver.h src/libvirt.c src/libvirt_sym.version
  src/proxy_internal.c src/qemu_internal.c src/test.c src/virsh.c
  src/xen_internal.c src/xen_internal.h src/xend_internal.c
  src/xm_internal.c src/xs_internal.c: applied patch from
  Masayuki Sunou to add and entry point to check the maximum
  number of virtual CPU supported by a virtualization mechanism
* doc/*.html doc/libvirt-*.xml: regenerated the interfaces descriptions
  and associated docs.
Daniel

  src/libvirt.c src/libvirt_sym.version src/xen_internal.c
  src/xen_internal.h src/xend_internal.c src/xend_internal.h:
  applied patch from Michel Ponceau and Philippe Berthault for
  virtual CPU and affinity support plus a bit of cleanup.
Daniel

  src/xen_internal.h src/xend_internal.c src/xend_internal.h:
  implemented id based lookup and other cleanups, virsh starts to
  work, but still some TODOs
Daniel

  src/Makefile.am: moved proxy/proxy.h and proxy/proxy_client.c as
  proxy_internal.[ch] and integrated them as a new driver.
* proxy/Makefile.am proxy/libvirt_proxy.c src/xen_internal.c
  src/xen_internal.h src/xend_internal.c: various related cleanups.
Daniel

  a TODO in xs_internal.c pointed out by Philippe Berthault
Daniel

  some processing but not used yet
* src/libvirt.c src/xen_internal.c src/xen_internal.h: added domain
  listing and number queries entry points based on the hypervisor
  which should speed up some processing as root.
Daniel

* include/libvirt.h include/libvirt.h.in: added intialization function
* include/virterror.h src/virterror.c: one more error code
* src/internal.h: first part of Jim's format checking
* src/libvirt.c src/xen_internal.[ch] src/xend_internal.[ch]
  src/xs_internal.[ch]: initialization and registration of drivers
Daniel

  src/virterror.c: created a new module related to Xen Store accesses
* src/libvirt.c src/xen_internal.[ch] src/xend_internal.[ch]:
  nearly completed the separation of the code from the different modules
Daniel

  src/xen_internal.h docs/apibuild.py: starting the refactoring,
  first the direct Xen hypervisor module. New header describing the
  entry points of a driver.
Daniel

  src/sexpr.h src/virsh.c src/virterror.c src/xen_internal.c
  src/xen_internal.h src/xend_internal.c src/xend_internal.h
  src/xml.c src/xml.h: applied cb/indent to homogenize the source
  style, as a first pass.
Daniel

  should not emit error when failing to open the hypervisor proc
  entry point.
Daniel

  API implementation, only CreateLinux is now missing.
Daniel

  Pause, Resume, Destroy, but untested yet.
Daniel

* src/libvir.c src/libvir_sym.version src/xen_internal.[ch]
  include/libvir.h: implementing hypervisor Version and Type interfaces
* src/virsh.c: adding a version command, WIP
Daniel

  src/xen_internal.h: removed dependancy on xenctrl library, untested
  yet.
Daniel