[jfx17u] RFR: 8294400: Provide media support for libavcodec version 59

[Kevin Rushforth]

Nearly clean backport to jfx17u (trivial conflict in the diff for the copyright line in two files).

CI build run on all three platforms.

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Commit messages:
 - 8294400: Provide media support for libavcodec version 59

Changes: https://git.openjdk.org/jfx17u/pull/96/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx17u&pr=96&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294400
  Stats: 140 lines in 10 files changed: 108 ins; 0 del; 32 mod
  Patch: https://git.openjdk.org/jfx17u/pull/96.diff
  Fetch: git fetch https://git.openjdk.org/jfx17u pull/96/head:pull/96

PR: https://git.openjdk.org/jfx17u/pull/96