RFR: JDK-8301092 - Add benchmark for CRC32 [v2]

[Scott Gibbons]

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

Scott Gibbons has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'openjdk:master' into CRC32
 - Updated copyright
 - Add benchmark for CRC32

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12199/files
  - new: https://git.openjdk.org/jdk/pull/12199/files/0f098760..d61f6588

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12199&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12199&range=00-01

  Stats: 215 lines in 56 files changed: 27 ins; 37 del; 151 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