[FFmpeg-devel] Fix bug for POWER LE: libswscale/ppc/swscale_altivec.c

[rongyan]

Hi,
 I created a patch to fix the bug in file libswscale/ppc/swscale_altivec.c for POWER LE. The fixed functions including 'hScale_altivec_real()', 'yuv2planeX_16_altivec()', and 'yuv2planeX_8()'. The fate test result can be found on http://fate.ffmpeg.org/ by search "ibmcrl", also attached here to facilitate the review:
 
  
 The passed test cases increased from 1677/2176 to 1841/2187.
 The patch is attached.
 Thanks.
  
 Rong Yan
  
  ------------------
  The world has enough for everyone's need, but not enough for everyone's greed.
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