[VideoPlayer] d3d11va improvements.

[afedchin]

1. dropped unneeded dxva->d3d11va wrapper. Now we build ffmpeg with d3d11va support and can use it directly.
2. Added support of hevc main10 profile to our dxva decoder. Still needs to updated ffmpeg.
3. Added support 10/16 bit video output through dxva renderer.

@FernetMenta @fritsch ping.

[afedchin]

jenkins build this please

[fritsch]

Thank you very much, I pushed a the 3.0-xbmc branch to kodi's ffmpeg fork - if you want you can provide testbuilds by just changing our ffmpeg version as we build from branch already for master: https://github.com/xbmc/FFmpeg/commits/release/3.0-xbmc

Btw. we have a whole lot of warnings to fix with the upcoming 3.0 version

[fritsch]

If it works correctly, you can pick: fritsch@1cb028d

[afedchin]

@fritsch properly ffmpeg bump afedchin@a46a3b6

[fritsch]

Jep, that's better :-) After those commits are properly discussed just add that one on top.

[afedchin]

hm.. interesting fail. lets' try again
jenkins build this please

[FernetMenta]

I don't want to see ffmpeg bumped with this change. Please bump it separately and take the time to look at the mentioned warning.

[afedchin]

as I said in slack this may go in without ffmpeg bump. if @FernetMenta has no objections I will merge this in next window.

[fritsch]

@FernetMenta jep, good decision. The warnings are deprecation warnings. We currently have ~ 10 warnings in our code with 2.8, that can also be solved / silenced / ported that way.

[FernetMenta]

I don't have any objections to this pr. go ahead.