Fixes an inadvertant change made in a previous patch while doing
some experiments.

Change-Id: I9961f2157c803676491a3d6daf056ff8a37367b3

Moves all post encode rate control updates to a separate function
plus other cleanups.

Change-Id: I70e8eccf666c88d8b649b969997fd84d27e4baaa

We only need qcoeff buffers in the encoder. Reducing TileWorkerData struct
and VP9Decompressor struct sizes by 24K.

Change-Id: Id148868461f7ffa3d3dd634b371503ae9c57e207

Change-Id: Iae16644faeed920e69cd5d1db71e2e1e4bda241c

Change-Id: I248ccb1532e2cd95314d0b95108f2c2e71cf084f

Renaming treed_read() to consistent vp9_read_tree() and moving it from
deleted vp9_treereader.h to vp9_dboolhuff.h file.

Change-Id: Iedd8655acbe25e4fcf62b79e5a13bdea69b6b004

Change-Id: I406021e34b31b899202a99b39d3da4fa06ebee69

Added the test vector provided by Attila, which caught the bug in
Issue 661 "Decoder produces mismatched outputs with ssse3 enabled
and disabled"

vp90-hantro-stream-001.ivf
size: 320x180; 20 frames

Change-Id: Ic0d2b57ac7596ecb938dd55abc8c706fc2dd6d8f

Multiply by 3 was on 8bit vectors when it should have been on
16bit vectors.

Change-Id: I248c1429b3134dfd171dfab0ebb109fd2437e1fc

Change-Id: Ibc61ef81fafeb20df6df6e5496b6c01760f3dc84

Change-Id: Ic318be9d74a95793abc41501fe563164de53a6d7

Removes the active_worst_qchanged variable since it is never
set to 1.

Change-Id: I29a291fd1068fd9b504a2db7768d45644c1eae3e

Moved arrays:
  vp9_mv_joint_encodings
  vp9_mv_class_encodings
  vp9_mv_class0_encodings
  vp9_mv_fp_encodings

Change-Id: Iaf5008c579fcbd6d77fdd81d1aef8c71b5f308b7

Renaming vp9_init_mode_costs() to fill_mode_costs() and moving it to
vp9_rdopt.c.

Change-Id: Ib2542d216458f6dced9f4b7ccbdd2cd98176aa5a

- Add command line args that allow display of warnings without prompting
  for user input.
- Extend warning code to make it somewhat scalable.

Change-Id: I2bad8f9315f6eed120c2e1bbe0a2a5ede15fbf35

Change-Id: Ib273dfff3be284f3c9ae288e5315fb6c6126f9c2

Change-Id: I31c3908ba394095deb5d3a5d7b7c9b2b5328c3e8

The idea here is to allow "in frame" adjustment of the final Q
value used to encode each SB64, using segmentation.

There is also adjustment of the rd mult in regions of overspend.

Activated using aq_mode=2

Change-Id: I2f140cd898c9f877c32cd6d2e667f5e11ada4b1c