[libvirt] [PATCH 0/7 RFC] RHEL-5 support, and a few preparatory fixes

[Markus Armbruster <armbru redhat com>]

This patch series attempts to make libvirt just work on RHEL-5.  Right
now it doesn't, mostly because libvirt relies on version number checks
in a couple of places, and RHEL-5's version numbers aren't the whole
truth due to various backports of later stuff.

The first two patches are plain bug fixes:

    [PATCH 1/7] Fix network device inconsistency between xm and sxpr
    [PATCH 2/7] Fix graphics configuration inconsistency between xm and sxpr

The next three add a few special cases for RHEL-5:

    [PATCH 3/7] New configure option --with-rhel5-api
    [PATCH 4/7] Fix HVM network device configuration for RHEL-5
    [PATCH 5/7] Fix PVFB device configuration for RHEL-5
    [PATCH 6/7] Enable NUMA support for RHEL-5

The last one drops a counter-productive error check:

    [PATCH 7/7] Don't treat missing topology information as error

See the patches for more detailed descriptions.

I'm not proposing this for immediate commit, as I'm still testing.
But I'd appreciate review: is this the right way to do it?

Thanks,

Markus