RFR: 8328352: Serial: Inline SerialBlockOffsetSharedArray [v2]

[Guoxiong Li]

> Hi all,
> 
> This patch merges `SerialBlockOffsetSharedArray` into `SerialBlockOffsetTable` so that the `TenureSpace` and `TenuredGeneration` can use them easily. The tests `make test-tier1_gc` passed locally.
> 
> Thanks for taking the time to review.
> 
> Best Regards,
> -- Guoxiong

Guoxiong Li has updated the pull request incrementally with one additional commit since the last revision:

  Add space in order to align.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18501/files
  - new: https://git.openjdk.org/jdk/pull/18501/files/a28ea04d..26290554

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18501&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18501&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18501.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18501/head:pull/18501

PR: https://git.openjdk.org/jdk/pull/18501