Doc: Update i18n devref

The internationalization devref was out of date (and wrongly named). This
patch documents the current advice for internationalization.

Change-Id: If91b3b11c4050cb231b7d9c38b6beca8ba6ce236
objects: fix version changelog in numa

The version info needs to be incremented as well as
the object version.

Change-Id: Ie186e474aa41b5cb89c804aa426b20cec8d4c9e0
libvirt: enhance to return avail free pages on cells

Update driver libvirt to return avail free pages memory
on numa cells.

Work-Item: Enhance libvirt driver to report available
           large pages per NUMA node in the host state data

Change-Id: If2e5b509df2a32464d040cd79b29368b60513cff
Partial-Implement: blueprint virt-driver-large-pages
Merge "libvirt: enhance to return avail free pages on cells"
Merge "objects: fix version changelog in numa"
Merge "Doc: Update i18n devref"