RFR: 8299274: Add elements to resolved_references consistently [v3]

[Coleen Phillimore]

> I added a resolved_references_at and set_resolved_references_at() functions to use for accesses to the resolved_references array, except for the CDS usages. This has an assert that the element is an oop and oob checks and setting elements use a CAS consistently.
> These asserts seem useful for finding the bug causing https://bugs.openjdk.org/browse/JDK-8296915.
> Tested with tiers1-4.

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

  Change the name to resolved_reference_at because there's a resolved_klass_at but I don't like this name as much as having resolved_references (plural) in the name.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/11834/files
  - new: https://git.openjdk.org/jdk/pull/11834/files/50ff492c..015e590a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11834&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11834&range=01-02

  Stats: 15 lines in 6 files changed: 0 ins; 0 del; 15 mod
  Patch: https://git.openjdk.org/jdk/pull/11834.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11834/head:pull/11834

PR: https://git.openjdk.org/jdk/pull/11834