[PATCH 0 of 5] support of NUMA topology in xl

[Juergen Gross <juergen.gross@ts.fujitsu.com>]

This is V3 of my patch series to support NUMA in xl with cpupools.

Patch 1 adds a libxl function to retireve topology information from hypervisor
Patch 2 adds support of -n option to xl info
Patch 3 adds possibility to specify complete nodes instead of cpus for cpupools
Patch 4 adds possibility to rename a cpupool (libxl and xl command)
Patch 5 adds a new xl command cpupool-numa-split to create one cpupool per numa node

Changes since last version:
- added Py_INCREF when appending Py_None to list
- added libxl__free_all(&gc) in libxl_cpupool_rename()

9 files changed, 540 insertions(+), 21 deletions(-)
tools/libxl/libxl.c               |  170 ++++++++++++++++++++
tools/libxl/libxl.h               |   11 +
tools/libxl/libxl.idl             |    7 
tools/libxl/libxl_utils.c         |   28 +++
tools/libxl/libxl_utils.h         |    2 
tools/libxl/xl.h                  |    2 
tools/libxl/xl_cmdimpl.c          |  300 +++++++++++++++++++++++++++++++++++--
tools/libxl/xl_cmdtable.c         |   16 +
tools/python/xen/lowlevel/xl/xl.c |   25 +++