[lworld] RFR: 8253143: [lworld] Valhalla microbenchmarks bulk update

[Sergey Kuksenko]

Existing Valhalla microbenchmarks were completely revisited, reimplemented and vastly expanded.

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Commit messages:
 - [lworld] Valhalla microbenchmarks bulk update (jcheck whitespaces fix)
 - Valhalla microbenchmarks bulk update
 - update Merge branch 'lworld' of github.com:openjdk/valhalla into lworld
 - Merge pull request #1 from openjdk/lworld

Changes: https://git.openjdk.java.net/valhalla/pull/188/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=188&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253143
  Stats: 46276 lines in 320 files changed: 34949 ins; 11314 del; 13 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/188.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/188/head:pull/188

PR: https://git.openjdk.java.net/valhalla/pull/188