RFR: 8251358: Clean up Access configuration after Shenandoah barrier change [v2]

[Aditya Mandaleeka]

> This change removes a bunch of code that is no longer necessary after the Shenandoah barrier changes, including the
> `SUPPORT` macros in barrierSetConfig.hpp and code using them. `Access::resolve` and associated code have also been
> removed, and callers have been modified.  Testing done:
> tier1
> hotspot_gc_shenandoah

Aditya Mandaleeka 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 two additional commits
since the last revision:

 - Remove redundant _raw functions.
 - 8251358: Clean up Access configuration after Shenandoah barrier change

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/146/files
  - new: https://git.openjdk.java.net/jdk/pull/146/files/df595b28..45d77581

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=146&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=146&range=00-01

  Stats: 24516 lines in 666 files changed: 12969 ins; 8897 del; 2650 mod
  Patch: https://git.openjdk.java.net/jdk/pull/146.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/146/head:pull/146

PR: https://git.openjdk.java.net/jdk/pull/146