* gnu/packages/virtualization.scm (libvirt): Update to 7.2.0.
[arguemnts]: Switch to meson, only build system supported by upstream.
[inputs]: Add libssh2 and readline.
[native-inputs]: Add bash-completion, gettext, python-docutils and
rpcsvc-proto.
* gnu/packages/patches/libvirt-add-install-prefix.patch: New file...
* gnu/local.mk: ...add it.
* gnu/packages/patches/libvirt-create-machine-cgroup.patch: Delete file,
merged by upstream.
Tested-by: Pierre Langlois <pierre.langlois@gmx.com>
