Merge commit 'e90137c0'

* commit 'e90137c0':
  mov: Export spherical information
  lavc: Add spherical packet side data API
  lavu: Add AVSphericalMapping type and frame side data

This commit is a noop, see
8f58ecc3
e7a6f8c9
4dcdecf4Merged-by: James Almer <jamrial@gmail.com>