RFR: 8320530: has_resolved_ref_index flag not restored after resetting entry [v4]

[Matias Saavedra Silva]

> ResolvedMethodEntry::reset_entry() clears the fields in the structure and then restores the constant pool index and the resolved references index if it has one. Currently, the resolved references index is restored without restoring the has_resolved_reference flag used by the structure. 
> 
> This patch restored the flag with the resolved references index. Verified with tier 1-5 tests.

Matias Saavedra Silva has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:

 - Merge branch 'master' into resolved_ref_flag
 - Coleen comments
 - Corrections and gtest fix
 - Added asserts to ensure correctness
 - Merge branch 'master' into resolved_ref_flag
 - Merge branch 'master' of https://github.com/openjdk/jdk into resolved_ref_flag
 - 8320530: has_resolved_ref_index flag not restored after resetting entry

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/16769/files
  - new: https://git.openjdk.org/jdk/pull/16769/files/0b82817d..d7d7b8da

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16769&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16769&range=02-03

  Stats: 17721 lines in 468 files changed: 12999 ins; 2833 del; 1889 mod
  Patch: https://git.openjdk.org/jdk/pull/16769.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16769/head:pull/16769

PR: https://git.openjdk.org/jdk/pull/16769