[REVIEW 3-5] rhbz#809019 presentation does not run with monitors in clone mode

[David Tardon]

Hi all,

the new gtk VCL plugin does not recognize that a multi-monitor machine
has the monitors configured in clone mode. The consequence of that is
that impress shows presenter console and not the presentation itself
(see https://bugzilla.redhat.com/show_bug.cgi?id=809019 ).

Commit b1c3f00d9b0ef6c91b0209c13531bd1f9d63c1e0 should fix that.

D.