Merged vp9_high and high_transforms options

Using --enable-vp9-high now automatically uses
the high precision transform code.

(Before you needed to specify both
--enable-vp9-high and --enable-high-transforms)

Change-Id: I742d5b82601bc38eb81c95d7ecd3f78b9ff0df57
Remove warnings about uninitialized variables

Change-Id: I25c8b393239e9a5ba5a0f5a5c5897bb38915f33e
Merge "Merged vp9_high and high_transforms options" into highbitdepth
fix build errors in vs2012

Macro expansion in VS2012 does not work with existing code, change in
this commit help VS2012 to properly expand the macros and avoid build
errors for test_libvpx project.

Change-Id: I642921462ee4869ea07f90795d7de0f6eaf7655b
Hdr change for profiles > 1 for intra-only frames

Adds bitdepth, color sampling ind color space information to header
for intra only frames in profile > 0.
Also enforces profile 1 and 3 exclusive usage for non 420 color
sampling.

Change-Id: I92b0630d5193fdbc6e71fa909d684521c12b5d99
Merge "Hdr change for profiles > 1 for intra-only frames" into highbitdepth