AWCY results:
PSNR	PSNR HVS  SSIM	CIEDE 2000
-0.09	-0.04	  -0.02	  -0.03

On Google testsets:
lowres  -0.18%
midres  -0.20%

Above results are obtained with
--disable-ext-refs --disable-dual-filter --disable-loop-restoration
--disable-global-motion --disable-warped-motion

Change-Id: Iba58d5e5ec9a65d0afba29609aa2e379a80d7236