AltiVec optimizations in libswscale are no longer GPL.

Originally committed as revision 18215 to svn://svn.ffmpeg.org/ffmpeg/trunk

LICENSE

@@ -11,7 +11,7 @@ configure to activate them. In this case, FFmpeg's license changes to GPL v2+.
 Specifically, the GPL parts of FFmpeg are
 
 - libpostproc
-- some x86 and AltiVec optimizations in libswscale
+- some x86 optimizations in libswscale
 - optional x86 optimizations in the files
   libavcodec/x86/h264_deblock_sse2.asm
   libavcodec/x86/h264_idct_sse2.asm