(was duplicated in libavcodec/ppc/vc1dsp_altivec.c nd libavcodec/ppc/mpegvideo_altivec.c, and will be used in upcoming routines for h264_altivec.c) Originally committed as revision 6621 to svn://svn.ffmpeg.org/ffmpeg/trunk
and fix GPL/LGPL version mismatches. Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
Originally committed as revision 5899 to svn://svn.ffmpeg.org/ffmpeg/trunk