RFR: 8252837: Cleanup SAP Copyright file headers

[Christoph Langer]

The format for SAP copyrights in OpenJDK headers should be like:
Copyright (c) <year> SAP SE. All rights reserved.
or
Copyright (c) <year1>, <year2> SAP SE. All rights reserved.

There should not be a comma character (",") before "SAP SE".

This is inconsistent in some files which calls for some cleanup.

Please review :)

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Commit messages:
 - 8252837: Cleanup SAP Copyright file headers

Changes: https://git.openjdk.java.net/jdk/pull/36/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=36&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8252837
  Stats: 55 lines in 55 files changed: 0 ins; 0 del; 55 mod
  Patch: https://git.openjdk.java.net/jdk/pull/36.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/36/head:pull/36

PR: https://git.openjdk.java.net/jdk/pull/36