RFR: 8306950: [REDO] JDK-8305252 make_method_handle_intrinsic may call java code under a lock [v4]

[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:

  Ioi noticed that met can never be null after put-if-absent.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13681/files
  - new: https://git.openjdk.org/jdk/pull/13681/files/6631c9b0..5d2132c1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13681&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13681&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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