When libvirtd starts it it will sanity check its own certs,
and before libvirt clients connect to a remote server they
will sanity check their own certs. This patch allows such
sanity checking to be skipped. There is no strong reason to
need to do this, other than to bypass possible libvirt bugs
in sanity checking, or for testing purposes.

libvirt.conf gains tls_no_sanity_certificate parameter to
go along with tls_no_verify_certificate. The remote driver
client URIs gain a no_sanity URI parameter

* daemon/test_libvirtd.aug, daemon/libvirtd.conf,
  daemon/libvirtd.c, daemon/libvirtd.aug: Add parameter to
  allow cert sanity checks to be skipped
* src/remote/remote_driver.c: Add no_sanity parameter to
  skip cert checks
* src/rpc/virnettlscontext.c, src/rpc/virnettlscontext.h:
  Add new parameter for skipping sanity checks independantly
  of skipping session cert validation checks

This is the part allowing to dynamically resize the debug log
buffer from it's default 64kB size. The buffer is now dynamically
allocated.
It adds a new API virLogSetBufferSize() which resizes the buffer
If passed a zero size, the buffer is deallocated and we do the small
optimization of not formatting messages which are not output anymore.
On the daemon side, it just adds a new option log_buffer_size to
libvirtd.conf and call virLogSetBufferSize() if needed
* src/util/logging.h src/util/logging.c src/libvirt_private.syms:
  make buffer dynamic and add virLogSetBufferSize() internal API
* daemon/libvirtd.conf: document the new log_buffer_size option
* daemon/libvirtd.c: read and use the new log_buffer_size option

Integrate with libaudit.so for auditing of important operations.
libvirtd gains a couple of config entries for auditing. By
default it will enable auditing, if its enabled on the host.
It can be configured to force exit if auditing is disabled
on the host. It will can also send audit messages via libvirt
internal logging API

Places requiring audit reporting can use the VIR_AUDIT
macro to report data. This is a no-op unless auditing is
enabled

* autobuild.sh, mingw32-libvirt.spec.in: Disable audit
  on mingw
* configure.ac: Add check for libaudit
* daemon/libvirtd.aug, daemon/libvirtd.conf,
  daemon/test_libvirtd.aug, daemon/libvirtd.c: Add config
  options to enable auditing
* include/libvirt/virterror.h, src/util/virterror.c: Add
  VIR_FROM_AUDIT source
* libvirt.spec.in: Enable audit
* src/util/virtaudit.h, src/util/virtaudit.c: Simple internal
  API for auditing messages

Allow for a host UUID in the capabilities XML. Local drivers
will initialize this from the SMBIOS data. If a sanity check
shows SMBIOS uuid is invalid, allow an override from the
libvirtd.conf configuration file

* daemon/libvirtd.c, daemon/libvirtd.conf: Support a host_uuid
  configuration option
* docs/schemas/capability.rng: Add optional host uuid field
* src/conf/capabilities.c, src/conf/capabilities.h: Include
  host UUID in XML
* src/libvirt_private.syms: Export new uuid.h functions
* src/lxc/lxc_conf.c, src/qemu/qemu_driver.c,
  src/uml/uml_conf.c: Set host UUID in capabilities
* src/util/uuid.c, src/util/uuid.h: Support for host UUIDs
* src/node_device/node_device_udev.c: Use the host UUID functions
* tests/confdata/libvirtd.conf, tests/confdata/libvirtd.out: Add
  new host_uuid config option to test

* qemud/: Rename to daemon/
* Makefile.am, configure.in, src/Makefile.am, src/remote_internal.c,
  tests/Makefile.am, tests/eventtest.c: s/qemud/daemon/ where needed

* docs/logging.html[.in] qemud/libvirtd.conf qemud/qemud.c
  src/logging.[ch]: cleanup the logging code and docs to remove
  all references to log level 0, cleanup hardcoded values and add
  a default VIR_LOG_DEFAULT value, patch by Amy Griffis
daniel

Before this change, the unix socket directory was hard-coded
to be e.g., /var/run/libvirt for euid==0 and ~/.libvirt otherwise.
With this change, you may now specify that directory in libvirtd's
config file via a line like this: unix_sock_dir = "/var/run/libvirt".
This is essential for running tests that do not impinge on any
existing libvirtd process, and in running tests in parallel.
* qemud/libvirtd.conf (unix_sock_dir): Add comment and example.
* qemud/qemud.h (struct qemud_server) [logDir]: Change type
from char[PATH_MAX] to char*.
* qemud/qemud.c (unix_sock_dir): New global
(remoteReadConfigFile): Set the global.
(qemudInitPaths): Use the global, unix_sock_dir, if non-NULL.
One minor improvement: unlink both sockets or none, never
just one of them.
(qemudCleanup): Free logDir.
(main): Use the new global rather than hard-coding "/run/libvirt".
* qemud/libvirtd.aug (sock_acl_entry): Add "unix_sock_dir".

* qemud/libvirtd.aug qemud/libvirtd.conf: document the new
  options in the config file and augment the Augeas description
daniel

This test would hang when failing to perturb the soon-to-be-
added numeric (and non-boolean) valued parameters, max_clients,
max_workers, min_workers.
* tests/daemon-conf: Require that all commented-out settings
in libvirtd.conf have the same form.  Before, two parameters
were not being tested, since a space had snuck between the
leading "#" and the "param = value" parts.
Apply each RHS-value-perturbing transformation
separately, not in series.
Let VERBOSE=yes turn on debugging.
Be more verbose by default, since this is a relatively
long-running test.
* qemud/libvirtd.conf: Normalize the spacing around each setting
that is to be perturbed by tests/daemon-conf.