commit 470ef077237c82c7ab7ba2def07241a6a1f9349c
author Johann <johannkoenig@google.com> Mon Jun 16 11:10:07 2014 -0700
committer Patrick Tjin <pattjin@google.com> Wed Jan 21 13:22:51 2015 -0800
tree c14a5232940efb52ebb7cba35d5e45977cb1e3d4
parent 004e13f2a5a0cf8e2abf94af22cfcee4572313ce

Turn on libvpx x86 optimizations [DO NOT MERGE]

With yasm available we can use the assembly:
https://android-review.googlesource.com/#/c/96972/

Comparing with the VP9 video playback with C-reference software decode,
before and after these patches applied,

Performance data with 2 test clips:
Clips                                    bit rate    fps(after)  fps(before)
vp9_720p_qp10to20_1510Kbps_30fps.webm	  1510Kbps      30	     12
vp9_720p_qp20to30_840Kbps_30fps.webm	  840Kbps       30	     13

(cherry-picked from afecaee6099284387688b9ce17ec3642ec4e5c1b)

Change-Id: I9c67e5ae302f923134e073f4bafb09fb1f3fe94d