Original commit message from CVS:
Reviewed by : Edward Hervey  <edward@fluendo.com>
* ext/ffmpeg/Makefile.am:
* ext/ffmpeg/gstffmpeg.c: (plugin_init):
* ext/ffmpeg/gstffmpegscale.c: (gst_ffmpegscale_base_init),
(gst_ffmpegscale_class_init), (gst_ffmpegscale_init),
(gst_ffmpegscale_finalize), (gst_ffmpegscale_transform_caps),
(gst_ffmpegscale_fixate_caps), (gst_ffmpegscale_get_unit_size),
(gst_ffmpegscale_set_caps), (gst_ffmpegscale_transform),
(gst_ffmpegscale_handle_src_event), (gst_ffmpegscale_register):
Port of ffvideoscale to 0.10.
Closes #332557