RFR: 8272788: Nonleaf ranked locks should not be safepoint_check_never [v3]

[Coleen Phillimore]

> I moved nonleaf ranked locks to be leaf (or leaf+something).  Many of the leaf locks are safepoint_check_never.  Segregating this rank into safepoint checking and non-safepoint checking is left for a future RFE.
> Tested with tier1-3.  Tier 4-6 testing in progress.

Coleen Phillimore has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains four commits:

 - Fix merge error.
 - Merge branch 'master' into nonleaf
 - Remove JfrSream_lock and rerun JFR tests.
 - 8272788: Nonleaf ranked locks should not be safepoint_check_neve

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Changes: https://git.openjdk.java.net/jdk/pull/5203/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5203&range=02
  Stats: 20 lines in 4 files changed: 3 ins; 13 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5203.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5203/head:pull/5203

PR: https://git.openjdk.java.net/jdk/pull/5203