Merge commit '7cb053e4'

* commit '7cb053e4':
  nvenc: Minimize the surface allocation
  nvenc: Use a fifo to manage the free surface pool
  nvenc: Add an explicit auto alias

This commit is a noop, see
7b0689c5
8de3458a
de2faec2Merged-by: James Almer <jamrial@gmail.com>