Re-tunes the lambda for motion search
Re-tunes the lambda for motion search

The change to fixed lapping has changed the quantizer-vs-bitrate relationship
so that quantizers are now smaller. To compensate, we need to increase the
lambda used in the motion search. The lambda floor was re-tuned at the same
time.

ntt-short:
           RATE (%)  DSNR (dB)
    PSNR -1.05581  0.03807
 PSNRHVS -1.02029  0.05522
    SSIM -0.91671  0.02589
FASTSSIM -1.88367  0.05808

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