Increase strength of AQ1.

This patch greatly increase the strength of AQ1.

Visual tests show strong gains on many clips but their is a big
hit on psnr.

SSIM is more mixed with some winners and losers.

Change-Id: Idaa5d3b41d8576096bfa000b62bc531c3d8bf6a1
Merge "Increase strength of AQ1."