Fixed incorrect backport of 6391

From upstream:

Changeset 20300: Updated descriptions for VDPAU and OpenGL deinterlacers.

Ticket 6391: Field Order “deinterlacer”. Add new “Interlaced 2X” deinterlacer ; allows to use the TV deinterlacer.

(included with Changeset 20299)

Ticket 2903: Double the calculated refresh rate when an interlaced modeline is detected

(included with Changeset 20277, this changeset doesn’t apply on fixes)

http://www.avenard.org/files/media/vdpau/mythtv-fixes-glvdpau20300-2.patch.gz