Add some options to specify VUI parameters.
config: Add --aud to use access unit delimiters.
Write Kvazaar's version and encoding options in an user data unregistered SEI.
Fixes to version sei message.

- Fixed the last 16 characters of the url string being cut of.
- Added some guards against the message overwriting the stack.
Merge branch 'options'
Update unit tests.

- Vectors that point far outside the frame don't work, although the special
  case of them pointing right beside the frame works. So test for vectors
  pointing farther away.
- Update include directory for greatest.
Fix interpolated_sad not working with vectors pointing far outside the frame.
Merge branch 'fix_sad'