Original commit message from CVS:
* ext/ffmpeg/gstffmpegcfg.c: (gst_ffmpeg_cfg_init):
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_class_init),
(gst_ffmpegdec_init), (gst_ffmpegdec_setcaps),
(gst_ffmpegdec_get_buffer), (get_output_buffer),
(gst_ffmpegdec_set_property), (gst_ffmpegdec_get_property):
Add G_PARAM_STATIC_STRINGS to avoid numerous strcpy calls.