RFR: 8254319: Shenandoah: Interpreter native-LRB needs to activate during HAS_FORWARDED [v2]

[Roman Kennke]

> We currently only activate native-LRB when EVACUATING, however we need it to activate during all of HAS_FORWARDED
> because it may have to resolve the target.

Roman Kennke 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:

 - Merge remote-tracking branch 'upstream/master' into 8254319
 - 8254319: Shenandoah: Interpreter native-LRB needs to activate during HAS_FORWARDED

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/579/files
  - new: https://git.openjdk.java.net/jdk/pull/579/files/f597a4fe..677ea4b8

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=579&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=579&range=00-01

  Stats: 1323 lines in 15 files changed: 1278 ins; 4 del; 41 mod
  Patch: https://git.openjdk.java.net/jdk/pull/579.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/579/head:pull/579

PR: https://git.openjdk.java.net/jdk/pull/579