[jdk21u-dev] RFR: 8310643: Misformatted copyright messages in FFM

[Goetz Lindenmaier]

I backport this to make later backports clean.

I resolved the following files because the Copyright date was bumped by 
another backport already.
test/jdk/java/foreign/TestMismatch.java
test/jdk/java/foreign/libLibraryLookup.c
test/jdk/java/foreign/libLookupTest.c
test/jdk/java/foreign/libSafeAccess.c
test/jdk/java/foreign/stackwalk/libReentrantUpcalls.c
test/jdk/java/foreign/stackwalk/libStackWalk.c

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Commit messages:
 - Resolved parts
 - Backport 0b4387e3a33dd360efc5856126394739256505f8

Changes: https://git.openjdk.org/jdk21u-dev/pull/1759/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1759&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310643
  Stats: 1006 lines in 58 files changed: 99 ins; 109 del; 798 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1759.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1759/head:pull/1759

PR: https://git.openjdk.org/jdk21u-dev/pull/1759