RFR: 8330595: Invoke ObjectMethods::bootstrap method exactly [v2]

[Claes Redestad]

> Investigating a recent regression in mainline I realized we have an opportunity to improve the bootstrap overheads of ObjectMethods::bootstrap by using `invokeExact` in a way similar to what we already do for LMF and SCF BSMs. This avoids generating type checking adapters and equates to a one-off startup win of around 5ms in any app that ever has the need to spin up a toString, equals or hashCode method on a record.

Claes Redestad has updated the pull request incrementally with one additional commit since the last revision:

  Use Arrays.copyOfRange

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18845/files
  - new: https://git.openjdk.org/jdk/pull/18845/files/31752237..86ccbbba

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18845&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18845&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18845.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18845/head:pull/18845

PR: https://git.openjdk.org/jdk/pull/18845