This commit factors the 4x4, 8x8, and 16x16 2D-DCT forward
transform operations into vpx_dsp folder.

Change-Id: I084b117b79c0925edcbcabb93f62b9f4bf8dbe7d

Change-Id: I0ac7beaa160a6c2a60a019f6b8ce85e6537bed7d

changes prefix vp9_ to vpx_ for non codec specific functions and
data structures.

Change-Id: I91a21548e39bd24d2c7caaaa223ae47240bb78c8

change prefix vp9_ to vpx_ for non codec specific functions and data
structures.

Change-Id: I97c7e6422eceea99212b93f4942bc2187763a07c

Replace vp9_ in names to vpx_ for non codec specific functions.

Change-Id: Ib9e3b86cb0728d10b239f3493ceda18cc2c34e0f

Replace vp9_ in names to vpx_ as they are not codec specific.

Change-Id: I2e583aa63dee769353ada4b42417aa15c4074ebb

Remove redundant file dependency.

Change-Id: I4708218157617dabe00e2e33e237be2838c16603

Remove the redundant function declarations therein.

Change-Id: I27731fb70bb1abce63da761a5812f518c62f590f

Change-Id: I963f08f1023481712c6f9ed624ddf05e5bac6321

This commit limits the scope of 1-D DCT and ADST functions within
vp9_dct.c and makes them static. This largely clears out the cross
referencing issue between vp9_dct.c and the SIMD optimizations.

Change-Id: If7cac478b11bb32328ccf70a9f60b709dad43d7f

Change-Id: I07647c7482b9ec498fbad3a9c9901f72b2336500

Change-Id: Id27e0007a0feac821ca66bcecbf3a723305da82d

The SSE2 version high bit-depth forward hybrid transforms are
essentially using the C functions via cross referencing to 1-D
functions in vp9_dct.c. This commit unifies the two versions and
removes the unnecessary dependency.

Change-Id: Ib4d0702a138f8daf7d0bd97c141ee7088f293765

Change-Id: Ib919a8ec2ec66d460d2f8a26d72aabc09dcbbd72

Separate the hybrid transform case from 2D-DCT case. This will
allow us to clear up cross dependency between c and SIMD
implementations later.

Change-Id: Iaa499e8b096850a1c5a0c50a3b6e63e15d0184bf

Change-Id: I0426126d0a65f13f9250983e44cc366b1b1a9c4a

These files have been moved to vpx_dsp directory. Clean the
vp9_common make file accordingly.

Change-Id: I9b1e820376421c801f705157e60cc7a55487f469

The following quantization functions were moved:
vp9_quantize_b
vp9_quantize_b_32x32
vp9_highbd_quantize_b
vp9_highbd_quantize_b_32x32

vp9_quantize_dc
vp9_quantize_dc_32x32
vp9_highbd_quantize_dc
vp9_highbd_quantize_dc_32x32

The purpose of doing that was to allow these functions to be shared
by multiple codecs.

Change-Id: Id8ab939f283353cdd07bd930d47db3d932a5d87f

Change-Id: I6f424bb8daec26bf8482b5d75dd9b0e45c11a665