RFR: 8343468: GenShen: Enable relocation of remembered set card tables [v2]

[William Kemper]

> Conflict in risc-v code, trivial resolution.

William Kemper has updated the pull request incrementally with one additional commit since the last revision:

  8351456: Build failure with --disable-jvm-feature-shenandoahgc after 8343468
  
  Reviewed-by: kvn, syan

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Changes:
  - all: https://git.openjdk.org/shenandoah-jdk21u/pull/186/files
  - new: https://git.openjdk.org/shenandoah-jdk21u/pull/186/files/83032cba..4fefb753

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=186&range=01
 - incr: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=186&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/186.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/186/head:pull/186

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/186