RFR: JDK-8301092 - Add benchmark for CRC32

[Scott Gibbons]

Adding a performance benchmark test for CRC32.  This does exactly the same test as for CRC32C.

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Commit messages:
 - Updated copyright
 - Add benchmark for CRC32

Changes: https://git.openjdk.org/jdk/pull/12199/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12199&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301092
  Stats: 61 lines in 1 file changed: 61 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/12199.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12199/head:pull/12199

PR: https://git.openjdk.org/jdk/pull/12199