Original commit message from CVS:
* gst/ffmpegcolorspace/Makefile.am:
* gst/ffmpegcolorspace/gstffmpegcolorspace.c:
(gst_ffmpegcsp_caps_remove_format_info),
(gst_ffmpegcsp_transform_caps), (gst_ffmpegcsp_set_caps),
(gst_ffmpegcsp_get_type), (gst_ffmpegcsp_class_init),
(gst_ffmpegcsp_init), (gst_ffmpegcsp_get_size),
(gst_ffmpegcsp_transform_ip), (gst_ffmpegcsp_transform):
Ported ffmpegcolorspace to basetransform.

* gst/videoscale/gstvideoscale.c: (gst_videoscale_transform):
* gst/volume/gstvolume.c: (volume_transform):
Ported to new API.