Even VPATH make dist succeeds now

The introduction of the v3 migration protocol, along with
support for migration cookies, will significantly expand
the size of the migration code. Move it all to a separate
file to make it more manageable

The functions are not moved 100%. The API entry points
remain in the main QEMU driver, but once the public
virDomainPtr is resolved to the internal virDomainObjPtr,
all following code is moved.

This will allow the new v3 API entry points to call into the
same shared internal migration functions

* src/qemu/qemu_domain.c, src/qemu/qemu_domain.h: Add
  qemuDomainFormatXML helper method
* src/qemu/qemu_driver.c: Remove all migration code
* src/qemu/qemu_migration.c, src/qemu/qemu_migration.h: Add
  all migration code.

Move the qemudStartVMDaemon and qemudShutdownVMDaemon
methods into a separate file, renaming them to
qemuProcessStart, qemuProcessStop. All helper methods
called by these are also moved & renamed to match

* src/Makefile.am: Add qemu_process.c/.h
* src/qemu/qemu_command.c: Add qemuDomainAssignPCIAddresses
* src/qemu/qemu_command.h: Add VNC port min/max
* src/qemu/qemu_domain.c, src/qemu/qemu_domain.h: Add
  domain event queue helpers
* src/qemu/qemu_driver.c, src/qemu/qemu_driver.h: Remove
  all QEMU process startup/shutdown functions
* src/qemu/qemu_process.c, src/qemu/qemu_process.h: Add
  all QEMU process startup/shutdown functions

The name convention of device mapper disk is different, and 'parted'
can't be used to delete a device mapper disk partition. e.g.

Name                 Path
-----------------------------------------
3600a0b80005ad1d7000093604cae912fp1 /dev/mapper/3600a0b80005ad1d7000093604cae912fp1

Error: Expecting a partition number.

This patch introduces 'dmsetup' to fix it.

Changes:
  - New function "virIsDevMapperDevice" in "src/utils/utils.c"
  - remove "is_dm_device" in "src/storage/parthelper.c", use
    "virIsDevMapperDevice" instead.
  - Requires "device-mapper" for 'with-storage-disk" in "libvirt.spec.in"
  - Check "dmsetup" in 'configure.ac' for "with-storage-disk"
  - Changes on "src/Makefile.am" to link against libdevmapper
  - New entry for "virIsDevMapperDevice" in "src/libvirt_private.syms"

Changes from v1 to v3:
  - s/virIsDeviceMapperDevice/virIsDevMapperDevice/g
  - replace "virRun" with "virCommand"
  - sort the list of util functions in "libvirt_private.syms"
  - ATTRIBUTE_NONNULL(1) for virIsDevMapperDevice declaration.

e.g.

Name                 Path
-----------------------------------------
3600a0b80005ad1d7000093604cae912fp1 /dev/mapper/3600a0b80005ad1d7000093604cae912fp1

Vol /dev/mapper/3600a0b80005ad1d7000093604cae912fp1 deleted

Name                 Path
-----------------------------------------

* configure.ac docs/news.html.in libvirt.spec.in: bump version and add docs
* po/*.po*: updated Gujarati, Polish and Dutch localisations and regenerated

"qemudDomainSaveFlag" goto wrong label "endjob", which will cause
error when security manager trying to restore label (regression).

As it's more reasonable to check if vm is shutoff immediately, and
return right away if it is, remove the checking in "qemudDomainSaveFlag",
and add checking in "qemudDomainSave".

* src/qemu/qemu_driver.c

Libxml2-Logo-90x34.gif was removed from the repository in Sep 2009
(commit d6d528ca) because our docs no longer reference it.

* docs/Makefile.am (install-data-local): Don't install missing file.

* src/util/cgroup.c (virCgroupSetValueStr, virCgroupGetValueStr)
(virCgroupRemoveRecursively): VIR_DEBUG can clobber errno.
(virCgroupRemove): Use VIR_DEBUG rather than DEBUG.

The code expected that host CPU architecture matches the architecture on
which libvirt runs. This is normally true but not in tests, where host
CPU is faked to produce consistent results.

Since we fake host CPU we should also fake host arch instead of taking
the real architecture tests are running on.

* docs/drvopenvz.html.in: Spell administrator correctly.
* docs/drvuml.html.in: Likewise.
* src/qemu/qemu.conf: Likewise.  Fix other typos, too.

Make with_packager and with_packager_version default to "no". This way
--without-packager-version (as shorthand for --with-packager(-version)=no)
works correctly too.

Prior to this patch libvirt outputs a line like this when
--with-packager(-version) was not specified

# ./daemon/libvirtd
14:11:15.018: 31796: info : libvirt version: 0.8.8, package:  ()

Now the unspecified parts are correctly omitted.

Reported by Osier Yang.

clang had 5 reports against virCommand; three were false positives
(a NULL deref in ProcessIO solved by sa_assert, and two uninitialized
memory operations solved by adding an initializer), but two were real.

* src/util/command.c (virCommandProcessIO): Fix real bug of
possible NULL dereference.  Teach clang that buf is never NULL.
(virCommandRun): Teach clang that infd is only ever accessed when
initialized.

* tools/virsh.c (cmdHelp): Kill dead variables.

* src/qemu/qemu_command.c (qemuBuildCommandLine): Don't report oom
after qemuBuildControllerDevStr, which reported its own errors.

The processWatchdogEvent fix is real, although it can only trigger
on OOM, since bad things happen if doCoreDump is called with a NULL
pathname argument.  The other fixes silence clang, but aren't a real
bug because virReportErrorHelper tolerates a NULL format string even
though *printf does not.

* src/qemu/qemu_driver.c (processWatchdogEvent): Exit on OOM.
(qemuDomainIsActive, qemuDomainIsPersistent, qemuDomainIsUpdated):
Provide valid message.

* src/libvirt.c (virDomainMemoryStats): Check domain before flags.

* src/util/threads-pthread.c: Fix mutex leak

The SCSI storage backend leaks a string containing the pathname
for each block device it discovers

* src/storage/storage_backend_scsi.c: Free the device name

This helps identifying which command exited with status != 0.

When creating the virDomain::snapshots hash table, virGetDomain
wasn't checking if the creation was successful. This would then
lead to failures in the vir*DomainSnapshot functions. Better to
report this error early and make virGetDomain fail if the
snapshots hash couldn't be created.
* src/datatypes.c: report failure to make a hash table

A couple of allocation were not calling virReportOOMError on allocation
errors

* src/util/hash.c: add the needed call in virHashCreate and
  virHashAddOrUpdateEntry

"virStorageBackendCreateVols":
  "names->next" serves as condition expression for "do...while",
however, "names" was shifted before, it then results in one less
loop, and thus, one less volume will be created for mpath pool,
the patch is to fix it.

* src/storage/storage_backend_mpath.c

* src/network/bridge_driver.c (networkStartNetworkDaemon): Delete
unused assignments.

* src/qemu/qemu_command.c (qemuParseCommandLineDisk): Report error
before cleaning def.

clang complained that STREQ(group->controllers[i].mountPoint,...)  was
a NULL dereference when i==VIR_CGROUP_CONTROLLER_CPUSET, because it
assumes the worst about virCgroupPathOfController.  Marking the
argument const doesn't yet have an effect, per this clang bug:
http://llvm.org/bugs/show_bug.cgi?id=7758

So, we use sa_assert, which was designed to shut up false positives
from tools like clang.

* src/util/cgroup.c (virCgroupMakeGroup): Teach clang that there
is no NULL dereference.

https://bugzilla.redhat.com/show_bug.cgi?id=676563

Regression introduced in commit 22115181.

* src/qemu/qemu_capabilities.c (qemuCapsProbeMachineTypes): Allow
non-zero exit status.

Detected by clang.

* src/util/xml.c (virXPathStringLimit): Use %zd, not obsolete %Zd.

This patch reorders the connlimit and comment match extensions relative to the state match (-m state); connlimit being most useful if found after a -m state --state NEW and not before it.

When formatting XML for smartcard device with mode=host, libvirt
generates invalid XML if the device has address info associated:

<smartcard mode='host' <address type='ccid' controller='0' slot='1'/>

Commit 9962e406 introduced a
problem where if the VM failed to startup, it would not be
correctly cleaned up. Amongst other things the SELinux
security label would not be removed, which prevents the VM
from ever starting again.

The virDomainIsActive() check at the start of qemudShutdownVMDaemon
checks for vm->def->id not being -1. By moving the assignment of the
VM id to the start of qemudStartVMDaemon, we can ensure cleanup will
occur on failure

* src/qemu/qemu_driver.c: Move initialization of 'vm->def->id'
  so that qemudShutdownVMDaemon() will process the shutdown

* src/util/hash.c: virHashAddEntry and virHashUpdateEntry were missing NULL
  checks on strdup
* AUTHORS: add Christophe Fergeau

Add missing subdirectories.

Compilation on mingw was warning about %lld use in fprintf, and
in the gnulib strptime module about dead labels.

* tools/virsh.c (vshPrint): Change redirect.
(vshPrintExtra): Allow use within vshPrint.  Avoid fprintf on
arbitrary formats, since we aren't using gnulib module; instead,
use virVasprintf to pre-format.
(vshError): Likewise.
* .gnulib: Update to latest, for mingw strptime warning fix.
Reported by Matthias Bolte.

Introduced by commit fac97c65 distributing cfg.mk, which
previously could blindly assume it was in a git checkout.

* cfg.mk (_update_required): Also check for .git.
* autogen.sh: Don't run bootstrap from a tarball.
Reported by Daniel Veillard.

Also use VIR_ERR_OPERATION_INVALID instead of VIR_ERR_NO_SUPPORT, as
the operation could succeed when the cgroup controller was mounted.