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'
Change VS release to use normal DLLs instead of debug.

- Thanks @selur for mentioning it in issue #11.
Fixed an issue with NxN using uninitialized y_recdata

NxN is still disabled by default as it's being fixed.
Removed redundant function call from encode_block_residual()

intra_set_block_mode() was called twice with the same parameters.
Fixed crash-bug when using NxN Intra mode (array index overflow)

In NxN mode, chroma predictions were pushed to buffer when chroma should not have been used at all. (Because it is processed only on first of the four NxN luma blocks)