update copyright text

rather than symlink the webm/vpx terms, use the same header as libvpx to
reference in-tree files

based on the discussion in:
https://codereview.chromium.org/12771026/

Change-Id: Ia3067ecddefaa7ee01550136e00f7b3f086d4af4
configure: improve gl/glut library test

add a check for a libGL function (glOrtho) in addition to glutMainLoop
when establishing the need for libGL at link time.

fixes vwebp link failure on ubuntu 13.04+

Change-Id: I537e9a5cab5cf4cd8875e06268d2107f377e625e
probe input file and quick-check for WebP format.

Error message is clearer that 'can't create demux object'.

Change-Id: Iec008601892f7cd8399e1948751747ac23305eef
Merge "update copyright text"
Merge "probe input file and quick-check for WebP format."
Tuned cross_color parameter (step) for lower qual

Tuned the cross_color transform parameter (step) for lower quality
levels. This change gives speedup of 20% at lower qualities (25) and 10% at
moderate quality level (50) with a loss of 0.25% in compression density.
Also removed TODO for cross_color transform. Observed good correlation of
this with the predict transform.

Change-Id: I8a1044e9f24e6a5f84295c030fd444d0eec7d154
Alpha unfilter for given set of rows

Support reconstruction of small number of rows at a time.

Change-Id: Ief1bc78c7ad011ec6df856551f3beb5f907fd8e0
DequantizeLevels(): Add 'row' and 'num_rows' args

Change-Id: I0032e25c30f34362105d942f2dbb9ac75200f911
Support decoding upto given row in DECODE_DATA_FUNC

This is in preparation for supporting Intertwined decoding of RGB and
alpha.

Change-Id: Ie1905d1212f4a00718a64dca020be3f4b1b870ec
Intertwined decoding of alpha and RGB

This will reduce the time to first decoded pixel.

Change-Id: I07b900c0ed4af3aac806b2731e11cd18ec16d016
store top Y/U/V samples in packed fashion

More cache-line friendly than storing them split.

Change-Id: Ifb23cc3518ff1b5c37afe007558d4278868d75ea
Alpha encoding: never filter in case of NO_COMPRESSION

This is because, filtering would never affect compression density for
this case.

Change-Id: I4bb14d3eb7da0a3805fda140eb1dfbf9ccc134f5
dec/vp8l: quiet vs9 x64 type conversion warning

src\dec\vp8l.c(816) : warning C4244: '=' : conversion from '__int64' to
'int', possible loss of data
src\dec\vp8l.c(817) : warning C4244: '=' : conversion from '__int64' to
'int', possible loss of data

Change-Id: I1d376d5dea909395bff8741aba16e8eed83a6e8f
muxedit: silence some uninitialized warnings

src/mux/muxedit.c:490: warning: 'x_offset' may be used uninitialized in this function
src/mux/muxedit.c:490: warning: 'y_offset' may be used uninitialized in this function

Change-Id: I4fd27f717e59a556354d0560b633d0edafe7a4d8
Regression fix for alpha unfiltering:

For vertical filter, correctly initialize 'preds' when not starting at
row 0.

Change-Id: I69697d73dde8a2f701f376ff3986d09fa6f7fee3
Merge "muxedit: silence some uninitialized warnings"
Regression fix for alpha channels using color cache:

Considering the fact that insert to/lookup from the color cache is always 32
bit, use DecodeImageData() variant in that case.

Change-Id: I6c665a6cfbd9bd10651c1e82fa54e687cbd54a2b