RFR: 8273450: Fix the copyright header of SVML files

[Sandhya Viswanathan]

Fix the copyright header of SVML files to match others.

This was brought up on jdk-dev mailing list:
https://mail.openjdk.java.net/pipermail/jdk-dev/2021-September/005992.html

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Commit messages:
 - 8273450: Fix the copyright header of SVML file

Changes: https://git.openjdk.java.net/jdk/pull/5399/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5399&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273450
  Stats: 288 lines in 72 files changed: 144 ins; 0 del; 144 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5399.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5399/head:pull/5399

PR: https://git.openjdk.java.net/jdk/pull/5399