FFmpeg Commits on May 30, 2017 remove libschroedinger & libnut

  FFmpeg Commits on May 30, 2017
  https://github.com/FFmpeg/FFmpeg/commit/220b24c7c97dc033ceab1510549f66d0e7b52ef1
  remove libschroedinger encoding and decoding wrappers
    The library has stopped being developed and Debian has removed it
    from its repositories citing security issues.
    The native Dirac decoder supports everything the library has and basic
    encoding support is still provided via the native vc2 (Dirac Pro, intra
    only version of Dirac) encoder. Hence, there's no reason to still support
    linking to the library and potentially leading users into security issues.

  https://github.com/FFmpeg/FFmpeg/commit/a3deeaade32db5a1b736b8d3365e52254f3fa6ac
  remove the libnut library wrapper
    libnut is outdated and not developed anymore, all nut developments
    happens in this repo, so users are getting mislead