[virt-tools-list] [virt-viewer 0/7] Add oVirt 'foreign menu' support

[Christophe Fergeau]

Hey,

In oVirt, after switching from starting remote-viewer through the Spice-XPI
plugin to starting remote-viewer by downloading a .vv file, the oVirt portal
lost the ability to specify a so-called 'foreign menu' which remote-viewer
would display in its UI.

This patch series readds this support when using .vv files, though it does
it differently. Rather than letting the oVirt portal specify an arbitrary
menu, this series teaches remote-viewer to use the oVirt REST API to
create a predefined menu similar to the foreign menu. Currently, this
menu will only list the ISOs available in oVirt for insertion in the
VM CDRom.

This patch to librest https://bugzilla.gnome.org/show_bug.cgi?id=708359 
is needed for this support to work, and due to small bugs in oVirt REST
API, using oVirt 3.4 is recommended. oVirt will need to be modified to
fill the necessary parameters in its .vv file for this to work from the
oVirt portal, but this can already be tested with a direct ovirt://
connection.

Christophe