[jdk21u-dev] RFR: 8351277: Remove pipewire from AIX build

[Matthias Baesken]

makefile needs adjustments, screencast_pipewire.c diffs in the stride + COPYRIGHT info

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Commit messages:
 - Backport 6bc480358c80b0a1a94b5ca5f4b7ff2d84ce8e37

Changes: https://git.openjdk.org/jdk21u-dev/pull/1844/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1844&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8351277
  Stats: 42 lines in 4 files changed: 35 ins; 4 del; 3 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1844.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1844/head:pull/1844

PR: https://git.openjdk.org/jdk21u-dev/pull/1844