RFR: 8306950: [REDO] JDK-8305252 make_method_handle_intrinsic may call java code under a lock [v2]

[Coleen Phillimore]

> This change redoes the intrinsic method table change to not hold a lock while calling make_method_handle_intrinsic.  The first commit is the original patch and the second is the fix to the bug it caused.
> The Atomic operations might not be needed.
> Tested with tier1-7, where tests in multiple tiers were regularly failing.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Remove Atomics and improve comments, thanks David.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13681/files
  - new: https://git.openjdk.org/jdk/pull/13681/files/918214e5..515d3ef7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13681&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13681&range=00-01

  Stats: 9 lines in 1 file changed: 3 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/13681.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13681/head:pull/13681

PR: https://git.openjdk.org/jdk/pull/13681