[MOVED FROM BAD 36/56] gst/deinterlace2/gstdeinterlace2.*: Add a GstDeinterlaceSimpleMethod subclass of GstDeinterlaceMethod that can be use...

Original commit message from CVS:
* gst/deinterlace2/gstdeinterlace2.c:
(gst_deinterlace_simple_method_interpolate_scanline),
(gst_deinterlace_simple_method_copy_scanline),
(gst_deinterlace_simple_method_deinterlace_frame),
(gst_deinterlace_simple_method_class_init),
(gst_deinterlace_simple_method_init):
* gst/deinterlace2/gstdeinterlace2.h:
Add a GstDeinterlaceSimpleMethod subclass of GstDeinterlaceMethod that
can be used by simple deinterlacing methods. They only have to provide
a function for interpolating a scanline or copying a scanline.