Updates the help messages to remove misleading information about SDL
being the normal display used.
Signed-off-by: NColin Lord <cdlord2@illinois.edu>
Message-Id: <1471030248-21637-1-git-send-email-cdlord2@illinois.edu>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>