Also adds compile check and a libyuv configure flag

Change-Id: Ib9f0f4a71c4083e6f0aea7b5a5d175531ef0f66b

This is needed for profiles 1 and 2.

Change-Id: I5dd7644c2932d055ab89e050d4be7d4117cd1028

The current decode_tiles decodes the frame one tile by one tile
and then loopfilter the whole frame or use another worker thread to
do loopfiltering.

|------|------|------|------|
|Tile1-|Tile2-|Tile3-|Tile4-|
|------|------|------|------|

For example, if a tile video has one row and four cols, decode_tiles
will decode the Tile1, then Tile2, then Tile3, then Tile4.
And during decode each tile, decode_tile will decode row by row in
each tile.

For frame parallel decoding, decode_tiles will decode video in row order
across the tiles. So the order will be:
"Decode 1st row of Tile1" -> "Decode 1st row of Tile2"
-> "Decode 1st row of Tile3" -> "Decode 1st row of Tile4"
-> "Decode 2nd row of Tile1" -> "Decode 2nd row of Tile2"
-> "Decode 2nd row of Tile3" -> "Decode 2nd row of Tile4"-> "loopfilter 1st row"

Change-Id: I2211f9adc6d142fbf411d491031203cb8a6dbf6b

Change-Id: I76a48b03388a8c5cc74b871deb836cd92263b306

This commit modifies the x86inc to allow explicit local buffer
allocation and the corresponding stack pointer adjustment.

Change-Id: I3cb2174e0242b5869a4ba0ca0cd240ee066836c3

MMX variance code in vp8 was reading out of bounds..

TODO(JBB):  The best fix would involve removing duplicate library
functions between vp8 and vp9...

Change-Id: I5722853a6a58d3b55257ff385fa54c773bf98ded

Added a skipping test in non-rd inter-mode. After interpolation
prediction step, the residuals are tested to see if they will be
quantized to 0 based on modeling between spatial domain and
frequency domain.

Set static-thresh to 800 for >=720p and 300 for <720p, rtc set
tests showed
1. Speed 5, psnr: -0.514%; ssim: -1.748%;
   speedup on related clips: 5% -11%
2. Speed 6, psbr: -0.628%; ssim: -1.637%;
   speedup on related clips: 4% - 9%

Change-Id: I62fbf26bc043ecd2b584f255f1a4ee5ab52bfcf3

speeds up windows configure by ~40%

Change-Id: Ie3138b8fe39ff4c901c35c5d689c1ed12da34866

Change-Id: Ieb3bc037a2ae7791323a0f9cec04381ba9b0c795

Use type TWO_PASS instead of "struct twopass".

Change-Id: I9d92920893bd436537b2ca19e9c9d355cca56c7c

Change-Id: I6f392ee38842120c0ff32b6c8853333af032ccb9

Use VPX_TEST_NAME instead of the script name sans path and extension
when reporting test results when the variable is not empty.

Also: Clean up some style nits while I'm at it.

Change-Id: I0319745a3b7a90d0f307e55c5108fea2204187cd

Change-Id: I4713406b751da06c41962f444f8873accc4fa044

Change-Id: I96ed73e109c4f89dd06f3583cf7ecf9277401fae