Add vdr-live OSD patch

See these links for more details:
http://www.vdr-portal.de/board16-video-disk-recorder/board55-vdr-plugins/119161-live-patch-f%C3%BCr-osd-ohne-ausgabeplugin
http://projects.vdr-developer.org/issues/1531
Merge pull request #41 from kokel/vdr-live-osd-pat

Add vdr-live OSD patch