I have primarily followed the pattern of the 'secret' driver to provide
support for the missing python bindings for the network filter API.

The generator code was totally wrong for the virDomainSnapshot
APIs, not generating the wrapper class, and giving methods the
wrong names

* generator.py: Set metadata for virDomainSnapshot type & APIs
* libvirt-override-api.xml, libvirt-override.c: Hand-code the
  virDomainSnapshotListNames glue layer

The generator was disabled for the new event callbacks, since they
need to be hand written. This patch  adds the C and python glue to
expose the new APIs in the python binding. The python example
program is extended to demonstrate of the code

* python/libvirt-override.c: Registration and dispatch of events
   at the C layer
* python/libvirt-override-virConnect.py: Python glue for events
* examples/domain-events/events-python/event-test.py: Demo use
  of new event callbacks

Introduce a new public API that provides a way to get progress
info on currently running jobs on a virDomainpPtr. APIs that
are initially within scope of this idea are

 virDomainMigrate
 virDomainMigrateToURI
 virDomainSave
 virDomainRestore
 virDomainCoreDump

These all take a potentially long time and benefit from monitoring.
The virDomainJobInfo struct allows for various pieces of information
to be reported

 - Percentage completion
 - Time
 - Overall data
 - Guest memory data
 - Guest disk/file data

* include/libvirt/libvirt.h.in: Add virDomainGetJobInfo
* python/generator.py, python/libvirt-override-api.xml,
  python/libvirt-override.c: Override for virDomainGetJobInfo API
* python/typewrappers.c, python/typewrappers.h: Introduce wrapper
  for unsigned long long type

* python/libvirt-override.c (libvirt_virConnectBaselineCPU): Don't leak
the xmlcpus buffer upon encountering a non-string list element.

adds a new python API call for retrieving the running
hypervisor version used by a connection: virConnectGetVersion

* python/generator.py: skip virConnectGetVersion from autogenerated
* python/libvirt-override-api.xml python/libvirt-override.c: define
  direct native bindings

Enable virDomainMemoryStats in the python API.  dom.memoryStats() will return a
dictionary containing the supported statistics.  A dictionary is required
because the meaining of each quantity cannot be inferred from its index in a
list.

* python/generator.py: reenable bindings for this entry point
* python/libvirt-override-api.xml python/libvirt-override.c: the
  generator can't handle this new function, add the new binding,
  and the XML description

* libvirt-override.c: Add many missing calls to allow threading
  when entering C code, otherwise python blocks & then deadlocks
  when we have an async event to dispatch back into python code.
  Fix return value check for virDomainPinVcpu binding.

* python/generator.py python/libvirt-override-api.xml
  python/libvirt-override.c: implement the bindings for
  virConnectListInterfaces() and virConnectListDefinedInterfaces()

There is currently no way to determine the libvirt version of a remote
libvirtd we are connected to. This is a useful piece of data to enable
feature detection.

suggested by danpb on irc, patch by danken fixed for proper C syntax

* python/libvirt-override.c: on event callback release the python
  interpreter lock and take it again when coming back so that the
  callback can reinvoke libvirt.

* README: New file describing what each file is used for
* livvirt-override.c, libvirt-override.py, libvirt-override-api.xml,
  libvirt-override-virConnect.py: Manually written code overriding
  the generator
* typewrappers.c, typewrappers.h: Data type wrappers
* generator.py: Automatically pre-prend contents of libvirt-override.py
  to generated libvirt.py. Output into libvirt.py directly instead of
  libvirtclass.py. Don't generate libvirtclass.txt at all. Write C
  files into libvirt.c/.h directly
* Makefile.am: Remove rule for creating libvirt.py from libvirt-override.py
  and libvirtclass.py, since generator.py does it directly

Convert all the secret/storage encryption APIs / wire format to
handle UUIDs in raw format instead of non-canonical printable
format. Guarentees data format correctness.

* docs/schemas/storageencryption.rng: Make UUID mandatory for a secret
  and validate fully
* docs/schemas/secret.rng: Fully validate UUID
* include/libvirt/libvirt.h, include/libvirt/libvirt.h.in, Add
  virSecretLookupByUUID and virSecretGetUUID. Make
  virSecretGetUUIDString follow normal API design pattern
* python/generator.py: Skip generation of virSecretGetUUID,
  virSecretGetUUIDString and virSecretLookupByUUID
* python/libvir.c, python/libvirt-python-api.xml: Manual impl
  of virSecretGetUUID,virSecretGetUUIDString and virSecretLookupByUUID
* qemud/remote.c: s/virSecretLookupByUUIDString/virSecretLookupByUUID/
  Fix get_nonnull_secret/make_nonnull_secret to use unsigned char
* qemud/remote_protocol.x: Fix remote_nonnull_secret to use a
  remote_uuid instead of remote_nonnull_string for UUID field.
  Rename REMOTE_PROC_SECRET_LOOKUP_BY_UUID_STRING to
  REMOTE_PROC_SECRET_LOOKUP_BY_UUID_STRING and make it take an
  remote_uuid  value
* qemud/remote_dispatch_args.h, qemud/remote_dispatch_prototypes.h,
  qemud/remote_dispatch_ret.h, qemud/remote_dispatch_table.h,
  qemud/remote_protocol.c, qemud/remote_protocol.h: Re-generate
* src/datatypes.h, src/datatypes.c: Store UUID in raw format instead
  of printable. Change virGetSecret to use raw format UUID
* src/driver.h: Rename virDrvSecretLookupByUUIDString to
  virDrvSecretLookupByUUID and use raw format UUID
* src/libvirt.c: Add virSecretLookupByUUID and virSecretGetUUID
  and re-implement virSecretLookupByUUIDString and
  virSecretGetUUIDString in terms of those
* src/libvirt_public.syms: Add virSecretLookupByUUID and
  virSecretGetUUID
* src/remote_internal.c: Rename remoteSecretLookupByUUIDString
  to remoteSecretLookupByUUID. Fix typo in args for
  remoteSecretDefineXML impl. Use raw UUID format for
  get_nonnull_secret and make_nonnull_secret
* src/storage_encryption_conf.c, src/storage_encryption_conf.h:
  Storage UUID in raw format, and require it to be present in
  XML. Use UUID parser to validate.
* secret_conf.h, secret_conf.c: Generate a UUID if none is provided.
  Storage UUID in raw format.
* src/secret_driver.c: Adjust to deal with raw UUIDs. Save secrets
  in a filed with printable UUID, instead of base64 UUID.
* src/virsh.c: Adjust for changed public API contract of
  virSecretGetUUIDString.
* src/storage_Backend.c: DOn't undefine secret we just generated
  upon successful volume creation. Fix to handle raw UUIDs. Generate
  a non-clashing UUID
* src/qemu_driver.c: Change to use lookupByUUID instead of
  lookupByUUIDString

* python/libvir.c (libvirt_virConnectDomainEventCallback): Return 0
when successful, rather than always returning -1.
clang flagged this function for its dead-store of "ret=0".
Once "ret" was set to 0, it was never used, and
the function would always return -1.

Sample session:

>>> import libvirt
>>> c = libvirt.open('qemu:///session')

>>> c.listSecrets()
['12247729-47d2-a783-88ce-b329d4781cd3', 'reee', 'abc']

>>> s = c.secretDefineXML("<secret ephemeral='no' private='no'>\n<description>Something for use</description>\n<volume>/foo/bar</volume>\n</secret>\n")

>>> s.UUIDString()
'340c2dfb-811b-eda8-da9e-25ccd7bfd650'

>>> s.XMLDesc()
"<secret ephemeral='no' private='no'>\n  <uuid>340c2dfb-811b-eda8-da9e-25ccd7bfd650</uuid>\n  <description>Something for use</description>\n  <volume>/foo/bar</volume>\n</secret>\n"

>>> s.setValue('abc\0xx\xffx')
0

>>> s.value()
'abc\x00xx\xffx'

>>> s.undefine()
0

* python/generator.py: Add rules for virSecret APIs
* python/libvir.c, python/libvirt-python-api.xml: Manual impl of
  virSecretSetValue, virSecretGetValue$ and virConnectListSecrets APIs
* python/libvirt_wrap.h, python/types.c: Wrapper for virSecret objects
* docs/libvirt-api.xml, docs/libvirt-refs.xml,
  docs/html/libvirt-virterror.html, docs/html/libvirt-libvirt.html,
  docs/devhelp/libvirt-virterror.html, docs/devhelp/libvirt-libvirt.html:
  Re-generate with 'make api'

  python/libvir.py python/libvirt_wrap.h python/types.c:
  adds support for events from the python bindings, also
  improves the generator allowing to embbed per function
  definition files, patch by Ben Guthro
* examples/domain-events/events-python/event-test.py: also
  adds a programming example
Daniel

  Apply patch from Cole Robinson fixing UUIDString for python
Daniel

* python/libvir.c (HAVE_PTHREAD_H): #undef.
Without this, we'd get a redefinition warning.

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

Done with these commands:
git grep -l Local.variab|xargs \
  perl -0x3b -pi -e 's,\n+/\*\n \* vim:(.|\n)*,\n,'

git grep -l Local.variab|xargs \
  perl -0x3b -pi -e 's,\n+/\*\n \* Local variables:\n(.|\n)*,\n,'

* python/libvir.c: apply patch from Cole Robinson to provide
  return values for manulally written python bindings.
Daniel

* Makefile.cfg (local-checks-to-skip): Remove sc_trailing_blank.
* .x-sc_trailing_blank: New file, to exempt the few binary files.

Use <config.h>, not "config.h", per autoconf documentation.
* Makefile.cfg (local-checks-to-skip) [sc_require_config_h]: Enable.
* .x-sc_require_config_h: New file, to list exempted files.
* Makefile.am (EXTRA_DIST): Add .x-sc_require_config_h.

* python/libvir.c (libvirt_virDomainBlockStats): Handle a NULL
return from PyTuple_New.
(libvirt_virDomainInterfaceStats, libvirt_virGetLastError): Likewise.
(libvirt_virConnGetLastError): Likewise.

* python/libvir.c (VIR_PY_NONE): New macro, to encapsulate
a common two-statement sequence.
Replace all such 2-stmt sequences.