Likewise, given if (foo != NULL) free (foo); remove the useless "if" test.

* proxy/libvirt_proxy.c: Remove unnecessary "if" test before free.
* python/generator.py: Likewise.
* qemud/qemud.c: Likewise.
* src/buf.c: Likewise.
* src/conf.c: Likewise.
* src/hash.c: Likewise.
* src/iptables.c: Likewise.
* src/libvirt.c: Likewise.
* src/openvz_conf.c: Likewise.
* src/qemu_conf.c: Likewise.
* src/qemu_driver.c: Likewise.
* src/remote_internal.c: Likewise.
* src/test.c: Likewise.
* src/virsh.c: Likewise.
* src/virterror.c: Likewise.
* src/xen_internal.c: Likewise.
* src/xen_unified.c: Likewise.
* src/xend_internal.c: Likewise.
* src/xm_internal.c: Likewise.
* src/xml.c: Likewise.
* src/xmlrpc.c: Likewise.
* src/xs_internal.c: Likewise.
* tests/testutils.c: Likewise.
* tests/xencapstest.c: Likewise.
* tests/xmconfigtest.c: Likewise.

Given code like: T *var = calloc (n, sizeof (T));
Convert to this: T *var = calloc (n, sizeof (*var));
This first-cut change adjusts all malloc, calloc, and
realloc statements.

The only binary differences are in remote_internal.c
(due to the bug fix) and in xmlrpc.c (due to factorization).

* python/libvir.c: As above.
* qemud/event.c: Likewise.
* qemud/mdns.c: Likewise.
* qemud/qemud.c: Likewise.
* qemud/remote.c: Likewise.
* src/bridge.c: Likewise.
* src/buf.c: Likewise.
* src/conf.c: Likewise.
* src/hash.c: Likewise.
* src/iptables.c: Likewise.
* src/openvz_conf.c: Likewise.
* src/qemu_conf.c: Likewise.
* src/qemu_driver.c: Likewise.
* src/test.c: Likewise.
* src/xen_internal.c: Likewise.
* src/xen_unified.c: Likewise.
* src/xm_internal.c: Likewise.
* src/xml.c: Likewise.
* tests/qemuxml2argvtest.c: Likewise.
* src/xmlrpc.c (xmlRpcValuePtr): Likewise, and minor factorization.
* src/remote_internal.c (remoteAuthMakeCredentials): Use the right
type when allocating space for an array of cred _pointers_.

        * python/libvir.c, python/libvirt_wrap.h, qemud/qemud.c,
        qemud/remote.c, src/internal.h, src/openvz_conf.c,
        src/openvz_driver.c, src/proxy_internal.h, src/qemu_conf.c,
        src/qemu_driver.c, src/remote_internal.h, src/test.h, src/util.c,
        src/xen_unified.c, src/xen_unified.h, tests/nodeinfotest.c,
        tests/qemuxml2argvtest.c, tests/qemuxml2xmltest.c, tests/reconnect.c,
        tests/sexpr2xmltest.c, tests/virshtest.c, tests/xencapstest.c,
        tests/xmconfigtest.c, tests/xml2sexprtest.c:
        Change #include <> to #include "" for local includes.
        Removed many includes from src/internal.h and put them in
        the C files which actually use them.
        Removed <ansidecl.h> - unused.
        Added a comment around __func__.
        Removed a clashing redefinition of VERSION symbol.
        All limits (PATH_MAX etc) now done in src/internal.h, so we
        don't need to include those headers in other files.

  src/xend_internal.c src/xm_internal.c src/xs_internal.c:
  cleanup the xen subdriver table, remove the type entry and
  always return "Xen" from the unified entry point.
Daniel

	* 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/xen_unified.[ch] src/xend_internal.[ch] src/xml.[ch]: last
  patch for the library NUMA support, allow to serialize CPU pinning
  to domain configs (but won't work though proxy access), includes
  many patches from Saori Fukuta.
Daniel

  from Jim Paris
Daniel

  src/driver.h src/libvirt.c src/openvz_driver.c src/qemu_driver.c
  src/test.c src/xen_unified.c src/xend_internal.c: add new API
  virNodeGetFreeMemory(), extends the driver. Lacks remote and
  QEmu support though.
* src/libvirt.c: allows to fix virNodeGetCellsFreeMemory() adding
  parameter check for startCell.
* proxy/libvirt_proxy.c src/xend_internal.[ch]
  include/libvirt/libvirt.h include/libvirt/libvirt.h.in: applied
  vncpasswd dump patch from Mark Johnson but with the
  virDomainXMLFlags extension as suggested by Daniel Berrange
  this changed a couple of internal APIs too
* tests/sexpr2xmldata/sexpr2xml-no-source-cdrom.xml: fix one of the
  tests affected by bootloader dump change.
Daniel

  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/xend_internal.c, src/xen_unified.c: Removed an annoying
	  warning when using Xen 3.0.3 and inactive domains.

	* 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/libvirt.c (virDomainMigrate): Added virDomainMigrate
	  API call.
	* src/xend_internal.c, src/xen_unified.c: Support for migration
	  of Xen domains.
	* src/xen_internal.c: Xen capabilities indicates level of
	  support for migration.
	* qemud/remote.c, qemud/remote_protocol.x, src/remote_internal.c:
	  Support for migration between remote hypervisors.
	* src/virsh.c: Added 'virsh migrate' command.
	* docs/libvir.html, docs/hvsupport.html: Updated hvsupport
	  documentation.

	* src/libvirt.c, src/xen_unified.c: If compiled with
	  --enable-debug=yes then we now trace libvirt calls on
	  stderr.

	* 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.

	* include/libvirt/libvirt.h.in, src/libvirt.c: (and numerous
	  other files) Added support for virConnectGetHostname
	  and virConnectGetURI calls.

	* qemud/remote.c, src/remote_internal.c: Fix virDomainGetVcpus
	  in the remote case.
	* src/libvirt.c: Allow virConnectListDomains,
	  virConnectListDefinedDomains, virConnectListNetworks and
	  virConnectListDefinedNetworks to work in the case where
	  they are called with maxids/maxnames == 0.
	* src/remote_internal.c: Fix virDomainGetMaxVcpus in remote
	  case so that it copies sufficient data.
	* src/xen_unified.c: Remove autostart functions.

	* src/libvirt.c, src/qemu_internal.c, src/test.c,
	  src/xen_unified.c, src/xend_internal.c,
	  src/libvirt.c, include/libvirt/virterror.h:
	  VIR_ERR_NO_SUPPORT means the function is not supported by
	  the hypervisor.  VIR_ERR_NO_CONNECT means the connection
	  failed.  VIR_ERR_CALL_FAILED is deprecated.  Drivers which
	  decline a URI now no longer produce an error.  Make
	  xen_unified.c ignore naked URI strings like "foo".

	* src/libvirt.c src/test.c src/xen_unified.c: Fix URI processing
	  so that local file URIs work again.  Move remote driver to
	  last in the list, and fix all drivers so they decline remote
	  URIs (Daniel Berrange).

        * configure.in: Solaris header file fixes (Mark Johnson).

  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/proxy_internal.c, src/qemu_internal.c, src/test.c,
	  src/xen_unified.c, src/xend_internal.c, src/xs_internal.c:
	  During virConnectOpen, be careful to call __virRaiseError
	  with conn = NULL so that the error message is not
	  discarded.

	* src/xen_unified.c: In the non-root case keep track of the
	  Xen underlying drivers which opened correctly and only
	  try methods on those opened drivers.

* docs/apibuild.py: do not scan xen_unified for APIs.
Daniel

	* src/xen_unified.c (xenUnifiedRegister): Comment the
	  xenUnifiedRegister function to avoid error message
	  when building docs/.  Patch from Atsushi SAKAI.

	* src/xen_unified.h, src/xen_unified.c: Fix indentation.

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